a b c d e f g h i j k l m n o p q r s t u v w x y z

Symbols

! (invert)
    on class Boolean
! (message send)
    on trait Actor
!= (not equals)
    method on Any 1 2
" (string delimiter)
""" (raw string delimiter)
@ (at sign)
    in annotations
    in patterns
    to extract XML attributes
& (bitwise-and)
    on integral types
& (intersect)
    on Set traits 1 2
&& (logical-and)
    on class Boolean
&~ (diff)
    on Set traits
> (greater than)
    on numeric types
>> (shift right)

a b c d e f g h i j k l m n o p q r s t u v w x y z

    on integral types
>>> (unsigned shift right)
    on integral types
>: (lower bound)
>= (greater than or equal to)
    on numeric types
< (less than)
    on numeric types
<< (shift left)
    on integral types
<- (in)
    in for expressions
<: (upper bound)
<= (less than or equal to)
    on numeric types
' (character delimiter)
() (empty parentheses)
    on method definitions
    shorthand for apply method invocation
() (unit value)
* (repeat)
    on class String
* (repeated parameter)
* (times)

a b c d e f g h i j k l m n o p q r s t u v w x y z

    on numeric types
+ (add element)
    on Map traits 1 2
    on Set traits 1 2 3
+ (covariant in)
    variance annotation
    List's type parameter
+ (plus)
    on numeric types
++ (add elements)
    on Map traits 1 2
    on Set traits 1 2
    on trait Iterator
    on Traversable traits
++= (add elements to)
    on trait mutable.Map 1 2
    on trait mutable.Set 1 2
++= (append)
    on trait Buffer
++=: (prepend)
    on trait Buffer
+: (prepend)
    on Seq traits
+= (add element to)

a b c d e f g h i j k l m n o p q r s t u v w x y z

    on trait mutable.Map 1 2
    on trait mutable.Set 1 2
+= (add to)
    on trait mutable.Set
    reassignment with immutable sets and vars
+= (append)
    on class ArrayBuffer
    on class ListBuffer 1 2
    on trait Buffer
+=: (prepend)
    on class ListBuffer
    on trait Buffer
- (contravariant in)
    variance annotation
- (minus)
    on numeric types
- (remove element)
    on Map traits 1 2
    on Set traits 1 2
-> (map to)
    in implicit conversion
— (remove elements)
    on Map traits 1 2
    on Set traits 1 2

a b c d e f g h i j k l m n o p q r s t u v w x y z

—= (remove elements from)
    on trait mutable.Map 1 2
    on trait mutable.Set 1 2
-= (remove element from)
    on trait mutable.Map 1 2
    on trait mutable.Set 1 2
    on trait Buffer
/ (divided by)
    on numeric types
/: (fold left)
    on class List
    on trait Iterator
    on Traversable traits
: (colon)
    in type annotations
:+ (append)
    on Seq traits
:: (cons) class
    as pattern constructor
    subclass of List
:: (cons) method
    on class List 1 2
    right associativity of 1 2
::: (concatenation)

a b c d e f g h i j k l m n o p q r s t u v w x y z

    on class List 1 2 3
: (fold right)
    on class List
    on trait Iterator
    on Traversable traits
; (semicolon)
    inference
= (variable assignment)
=> (right arrow, or "rocket")
    in function literals
    in import statements
    in self types
    in match alternatives
    in this aliasing
== (equals)
    in set membership
== (equals)
    in Scala versus Java
    in-depth treatment
    method on Any 1 2 3
    quick introduction
??? (unimplemented)
    on object Predef
# (pound sign)

a b c d e f g h i j k l m n o p q r s t u v w x y z

    in inner class type names
% (remainder)
    on numeric types
_ (underscore)
    in curried functions
    in function literals 1 2
    in identifiers
    in import statements
    in wildcard types
    in match expressions
    used to initialize a field to its default value
_* (underscore asterisk)
    in XML pattern matching
    repeated parameter
    sequence wildcard pattern
_1, _2, etc.(tuple accessors)
_= (underscore equals)
    in setter method names
^ (exclusive-or)
    on integral types
^^ (result conversion, or "eyebrows")
    parser combinator
  (bitwise complement)
    on integral types

a b c d e f g h i j k l m n o p q r s t u v w x y z

  (sequential composition, or "squiggle")
    parser combinator 1 2
 ! (committed sequential composition)
    parser combinator
 > (sequential composition right)
    parser combinator 1 2
<  (sequential composition left)
    parser combinator 1 2
(extract)
    on class Elem
\ (deep extract)
     on class Elem
| (alternative composition)
    parser combinator
    parser combinator
| (bitwise-or)
    on integral types
| (union)
    on Set traits
|| (logical-or)
    on class Boolean
{} (curly braces)
    and variable scope
    in class definitions

a b c d e f g h i j k l m n o p q r s t u v w x y z

    in imports
    in XML patterns
    in XML literals
    instead of parentheses in method invocations
    instead of parentheses in for expressions
` (back tick)
    in constants
    in identifiers

A

Abelson, Harold 1 2
abs method
    on class Double (via RichDouble)
    on class Int (via RichInt) 1 2
abstract members
abstract modifier
    not needed on abstract methods, fields, or types
    not needed on abstract methods, fields, or types
    on classes
    with override modifier on members of traits
abstract types
access modifiers
accessor methods
Actor trait
    methods

a b c d e f g h i j k l m n o p q r s t u v w x y z

        ! (message send)
actors 1 2 3 4 5
add method
    on trait mutable.Set
addString method
    on class List
    on trait Iterator
    on Traversable traits
Aho, Alfred 1 2
Akka 1 2 3 4 5
aliases
    AnyRef for Object
    type 1 2 3
aliasing
    object, see defensive copies
    this
alphabetic versus symbolic names
alternatives
    catch-all
    definition of
    in match expressions 1 2
    in catch clauses
    in partial function literals
andThen method

a b c d e f g h i j k l m n o p q r s t u v w x y z

    on trait Future
annotations
    and reflection
    applied to expressions
    arguments to
    @BeanProperty
    @deprecated 1 2
    in meta-programming
    Java-specific
    @native
    nested
    @serializable 1 2
    @SerialVersionUID
    standard
    syntax of
    @tailrec
    @Test
        in JUnit 4
    @throws
    @transient
    type 1 2 3
        for debugging
    @unchecked 1 2 3 4
    used with named arguments

a b c d e f g h i j k l m n o p q r s t u v w x y z

    variance
    @volatile
anonymous classes
anonymous functions, see function literals
ANTLR
Any class
    in Scala class hierarchy diagram
AnyRef class
    as alias of Object
    in Scala class hierarchy diagram
AnyVal class
    in Scala class hierarchy diagram
App trait 1 2
application
    function to arguments
    partial function 1 2
applications, Scala
apply method
    called with parentheses
    in extractors
    on Array
        class
        object
    on List

a b c d e f g h i j k l m n o p q r s t u v w x y z

        class
        object 1 2 3
    on Map
        objects
        traits 1 2 3
    on object Future
    on Seq objects
    on Seq traits
    on Set objects
    on trait PartialFunction
    on FunctionN traits
args variable
    in scripts
arguments
    command line, in scripts
    named
    variable length
    versus parameters
arithmetic operations (+, -, *, /, %)
    on numeric types
Array class
ArrayBuffer class
arrays 1 2
    accessed with () not []

a b c d e f g h i j k l m n o p q r s t u v w x y z

    converting to lists
    creating and initializing
    generic
    passing elements as arguments with _*
    quick introduction
asInstanceOf method
    on class Any
assert method
    on object Predef 1 2
AssertionError class
assertions 1 2
assignment
    result is unit value
associativity
    right versus left 1 2
attributes
    XML 1 2
automatic
    boxing
    conversion, see implicit conversion
    imports
auxiliary constructors

B

backtracking

a b c d e f g h i j k l m n o p q r s t u v w x y z

base classes, see superclasses
BDD, see behavior-driven development
BeanProperty annotation
BeanProperty annotation
behavior-driven development
BigInt class
BigInteger class
binary compatibility 1 2 3
Bison
bitwise operations, on integral types
    logical (&, |, ^,  )
    shift (<<, >>, >>>)
blank finals (Java)
    not in Scala
Bloch, Joshua 1 2 3
blocks, definition of
Boolean class 1 2
boolean literals
bottom types
bound variables 1 2
boxing, of value types
Bracha, Gilad
break keyword (Java)
    living without

a b c d e f g h i j k l m n o p q r s t u v w x y z

    not in match expressions
break method
    on class Breaks
breakable method
    on class Breaks
Breaks class
buffer
    members
Buffer trait
    methods
        clear
        clone
        insert
        insertAll
        remove
        trimEnd
        trimStart
        ++=: (prepend)
        ++= (append)
        +=: (prepend)
        += (append)
        -= (remove element from)
buffered method
    on trait Iterator

a b c d e f g h i j k l m n o p q r s t u v w x y z

ButtonClicked class
by-name parameters 1 2
by-value parameters
Byte class

C

C language
    parser generators
C language
C++ language 1 2
C# language
    enumerations
    properties
    static extension methods
camel casing
CanBuildFrom trait
capitalization, of identifiers
capitalize method
    on class Int (via RichInt)
case classes
case classes
    versus extractors
cases, see alternatives
casting, see also toInt, toChar, etc.
    with asInstanceOf

a b c d e f g h i j k l m n o p q r s t u v w x y z

    with typed patterns (the preferred style)
catch clauses
Cathedral and the Bazaar, The (Raymond)
chained package clauses
Char class
character encoding
    in XML
character literals
    escape sequences
checked exceptions 1 2
Church, Alonzo
Class class, see classOf method
class hierarchy diagram
    for Try
    for lists
    for maps
    for Scala
    for sets
class parameters
    initialization order compared to abstract fields
    not legal on singleton objects
    used to implement abstract fields
classes
    abstract 1 2

a b c d e f g h i j k l m n o p q r s t u v w x y z

    annotating
    anonymous
    case
    companion
    generic
    implicit
    inner, see inner classes
    nesting of
    private
    sealed
    virtual
classOf method
    on object Predef
clear method
    on trait mutable.Map
    on trait mutable.Set 1 2
    on trait Buffer
clone method
    on trait mutable.Map
    on trait mutable.Set
    on trait Buffer
closures 1 2
    versus Java's inner classes
code duplication

a b c d e f g h i j k l m n o p q r s t u v w x y z

    reducing 1 2
collect method
    on trait Future
collect method
    on trait Iterator
    on Traversable traits
collections
    api
    architecture
    conversion between Java and Scala
    parallel 1 2
    views of
combinators
companion objects
companion classes
companion objects
    and implicit conversion
    and factory methods
    visibility
compare method
    of trait Ordered 1 2
compatibility, Scala with Java 1 2
compiler errors
    class ...needs to be abstract, since method ...in class ...of type ...is not defined

a b c d e f g h i j k l m n o p q r s t u v w x y z

compiler errors
     overloaded method value ...with alternatives ...cannot be applied to ...
    ';' expected but ',' found
    ...is already defined as ...
    ...is not a legal prefix for a constructor
    class ...is abstract; cannot be instantiated
    class type required
    constructor ...cannot be accessed in ...
    could not find implicit value for parameter asTraversable
    covariant type ...occurs in contravariant position in type ...of parameter of setter ...
    covariant type ...occurs in contravariant position in type ...of value ... 1 2
    error overriding method ...in class ...of type ...method ...needs 'override' modifier
    error overriding method ...in class ...of type ...method ... cannot override final member
    illegal inheritance from final class
    inferred type arguments ...do not conform to method ...type parameter bounds ...
    method ...overrides nothing 1 2
    missing arguments for method ...follow this method with '_' if you want to treat it as a partially applied function
    no implicit argument matching parameter type ...was found
    no implicit argument matching parameter type ...was found 1 2
    not found: value ... 1 2
    overloaded method value ...with alternatives ...cannot be applied to ...
    pattern is unchecked since it is eliminated by erasure
    reassignment to val 1 2
    trait ...takes type parameters

a b c d e f g h i j k l m n o p q r s t u v w x y z

    type mismatch 1 2 3 4 5 6 7 8 9 10 11 12
    unreachable code
    value ...is not a member of ... 1 2
compiler warnings
    match is not exhaustive 1 2
    non variable type-argument ... in type pattern is unchecked since it is eliminated by erasure
    non variable type-argument ...in type pattern is unchecked since it is eliminated by erasure
Compilers: Principles, Techniques, and Tools (Aho, et. al.)
compiling
    Scala and Java together
complete function
complete method
    on trait Promise
completeWith method
    on trait Promise
complexity, managing
Component class
composition 1 2
    mixin, see mixin composition
concat method
    on object List
    on Seq objects
conciseness
    Scala versus Java

a b c d e f g h i j k l m n o p q r s t u v w x y z

concurrency
    actors model
    and testing
    futures
    shared data and locks
concurrentmap
    members
ConcurrentMap trait
    methods
        remove
        replace
ConcurrentMap trait
    methods
        putIfAbsent
configuring
    to wire modules together
    with Scala code
cons (::) method
    on class List 1 2 3 4
    right associativity of
    short for construct
Console object
constant patterns 1 2
constants

a b c d e f g h i j k l m n o p q r s t u v w x y z

constructor patterns 1 2
constructors
    auxiliary
    in Java versus Scala
    invoking superclass
    primary
        private
Container trait
contains method
    on Map traits 1 2
    on Seq traits
    on Set traits 1 2
containsSlice method
    on Seq traits
contents property
    on trait Container
context bounds 1 2
context-free grammars
continue keyword (Java)
    living without
contravariance 1 2
control abstraction 1 2
conventions, identifier capitalization
conversion

a b c d e f g h i j k l m n o p q r s t u v w x y z

    between Java and Scala collections
    between mutable and immutable collections
    implicit 1 2
    to specific collection types 1 2 3 4
copyToArray method
    on class List
    on trait Iterator
    on Traversable traits
copyToBuffer method
    on trait Iterator
    on Traversable traits
corresponds method
    on Seq traits
count method
    on class List
    on trait Iterator
    on Traversable traits
covariance
    of arrays in Java
    of function result type
    of lists 1 2
creating and initializing
    arrays
    lists

a b c d e f g h i j k l m n o p q r s t u v w x y z

    maps
    objects with factories 1 2
    objects with new
    sets
    singleton objects
    tuples
curly braces
    and variable scope
    in class definitions
    in imports
    in XML literals
    in XML patterns
    instead of parentheses in method invocations
    instead of parentheses in for expressions
currying 1 2

D

data structures
    fully persistent
    semi-structured
deadlock 1 2
deafTo method
    on Reactor
declarations, versus definitions
decrementing

a b c d e f g h i j k l m n o p q r s t u v w x y z

    with -= 1, not —, see incrementing
def keyword 1 2
    annotating
default methods
    in Java 8 1 2
default values
    of fields
defensive copies
definitions, versus declarations
dependency injection
deprecated annotation 1 2
dequeue method
    on class Queue
DeRemer, Frank
derived classes, see subclasses
deserialization
    XML
Design Patterns (Gamma, et. al.)
diff method
    on Seq traits
    on Set traits
Dijkstra, Edsger
distinct method
    on Seq traits

a b c d e f g h i j k l m n o p q r s t u v w x y z

divide and conquer principle
do-while loops
domain objects
Domain-Driven Design (Evans)
domain-specific languages
    a little language for digital circuits
    and implicit conversions
    defining an external DSL with parser combinators
    in Smalltalk and Lisp
    parser combinators as an internal DSL
    rich wrappers and internal versus external DSLs
    ScalaTest's matchers DSL
Double class
downloading
    Scala
    source code for book examples
drop method
    on class List
    on class List
    on trait Iterator
    on Traversable traits
dropRight method
    on class List
    on Iterable traits

a b c d e f g h i j k l m n o p q r s t u v w x y z

dropWhile method
    on class List
    on trait Iterator
    on Traversable traits
DSLs, see domain-specific languages
duplicate method
    on trait Iterator
dynamic
    binding 1 2
    typing 1 2 3

E

Eckel, Bruce
Eclipse IDE 1 2
EditDone class
Effective Java, Second Edition (Bloch) 1 2
Effective C++ (Meyers)
Effective Java, Second Edition (Bloch)
efficiency
    and hash consing
    of abstract classes versus traits
    of arrays 1 2
    of case classes versus extractors
    of class ListBuffer 1 2
    of fold left and right

a b c d e f g h i j k l m n o p q r s t u v w x y z

    of functional on the outside, imperative on the inside approach
    of immutable objects
    of lists
    of LL(1) versus backtracking parsers
    of looping versus recursion
    of maps
    of merge versus insertion sort
    of sets
    of tail versus non-tail recursion
    of value types 1 2 3 4
Eiffel language
Elem class 1 2
Elem type
    in trait Parsers
elements, XML
else clauses
embedded DSLs, see domain-specific languages
empty method
    on Map objects 1 2
    on Seq objects
    on Set objects 1 2
    on Set traits
empty-paren methods
enclosing instances, see inner classes

a b c d e f g h i j k l m n o p q r s t u v w x y z

endsWith method
    on Seq traits
enqueue method
    on class Queue
ensuring method
    on object Predef
entities
enum keyword (Java), see Enumeration class
Enumeration class
eq method
    on class AnyRef 1 2 3
equality, see also equals method
    != (not equals) method
        on class Any 1 2
    == (equals) method
        on class Any 1 2 3
    eq method
        on class AnyRef 1 2 3
    in Scala versus Java
    in-depth treatment
    ne method
        on class AnyRef 1 2
    quick introduction 1 2
    value versus reference

a b c d e f g h i j k l m n o p q r s t u v w x y z

equals method
    on class Any
equals method, see also equality
    generated for case classes
    on class Any 1 2
        contract of
    recipe for writing
erasure
    and pattern matching
Erlang language 1 2 3
errata, viewing and reporting
errors, see also compiler errors
    handling with exceptions
    in parsing
    preventing
escape sequences, for character literals
Evans, Eric
event sources
event handling 1 2
event listeners
eventually method
    on trait Eventually
example code, for book
    downloading

a b c d e f g h i j k l m n o p q r s t u v w x y z

    license of
exception handling
    and checked exceptions
exception handling
ExecutionContext
exists method
    on class List
    on class StringOps
    on class List 1 2
    on trait Iterator
    on Traversable traits
extends keyword
external DSLs, see domain-specific languages
extractors
    and injections
    extractor pattern
    extractor pattern

F

f string interpolator
F# language 1 2
factory objects
factory methods 1 2
collect method
    on trait Future

a b c d e f g h i j k l m n o p q r s t u v w x y z

failed method
    on object Future
Failure class
failure method
    on trait Promise
fallbackTo method
    on trait Future
false value
fields
    abstract
    defining
    initializing to default values with an underscore
    overriding
    parametric 1 2
    pre-initialized
    private 1 2
FileReader class
files
    ensuring closed with finally
    opening
    reading lines from
fill method
    on object List
    on Seq objects

a b c d e f g h i j k l m n o p q r s t u v w x y z

filter method
    on trait Future
filter method
    on class List 1 2
    on trait Iterator
    on Traversable traits
filterKeys method
    on Map traits
filterNot method
    on trait Iterator
    on Traversable traits
filters
    in for expressions
    in for expressions
final modifier
    on variables (Java), see vals
finally clauses
find method
    on class List
    on trait Iterator
    on Traversable traits
findAllIn method
    on class Regex
findFirstIn method

a b c d e f g h i j k l m n o p q r s t u v w x y z

    on class Regex
findPrefixOf method
    on class Regex
first-order methods
    on class List
flatMap method
    on class List
    on trait Future
    on trait Iterator
    on Traversable traits
    translating for expressions to invocations of
flatten method
    on trait Future
flatten method
    on class List
    on class List
Flex
Float class
floating-point literals
floatingPointNumber method
    in trait JavaTokenParsers 1 2
fold
    left
    right

a b c d e f g h i j k l m n o p q r s t u v w x y z

fold method
    on object Future
foldLeft method
    on class List
    on trait Iterator
    on Traversable traits
foldRight method
    on class List
    on trait Iterator
    on Traversable traits
for expressions
    translated before type checking
    types valid after ->
for expressions 1 2 3
    and extractors
    and Futures
    and XML patterns
    notation
    using patterns in 1 2
for loops, see also for expressions
forall method
    on class List 1 2
    on trait Iterator
    on Traversable traits

a b c d e f g h i j k l m n o p q r s t u v w x y z

force method
    on views
foreach method
    on trait Future
foreach method
    on class Array
    on class List 1 2
    on Traversable traits
    overriding
    translating for expressions to invocations of
formatted method
    on Any (via StringAdd)
formatting strings
Fortran language
Fowler, Martin
free variables
fromTry method
    on object Future
fsc (fast Scala compiler)
fully qualified names
function literals
    underscores in
function literals
    and closures

a b c d e f g h i j k l m n o p q r s t u v w x y z

    and single abstract method types
    for partial functions
    placeholder syntax 1 2
    syntax of
    underscores in
    versus function values
function values 1 2
    and closures
functional programming
    lazy initialization
functional programming 1 2
    main ideas of
functional style
    combining with imperative style
    in parsing
    methods without side effects
    recognizing
    refactoring functional style to
functions
    basic form of
    first-class 1 2
    higher-order
    local
    partial

a b c d e f g h i j k l m n o p q r s t u v w x y z

    partially applied 1 2
    predicates
    procedures
    pure
    recursive
    tail recursive
future method
    on trait Promise
Future object
    methods
        apply
        failed
        fold
        fromTry
        reduce
        sequence
        successful
        traverse
Future trait
    methods
        andThen
        collect
        failed
        fallbackTo

a b c d e f g h i j k l m n o p q r s t u v w x y z

        filter
        flatMap
        flatten
        foreach
        isCompleted
        map
        onComplete
        recoverWith
        recover
        transformWith
        transform
        value
        withFilter
        zipWith
        zip
futures

G

Gamma, Erich
generator, in for expressions
generic types
generic arrays
generic types
get method
    on Map traits

a b c d e f g h i j k l m n o p q r s t u v w x y z

getLines method
    on object Source
getOrElse method
    on Map traits
getOrElseUpdate method
    on trait mutable.Map
getter methods 1 2 3 4 5
Gosling, James 1 2
graphical user interfaces, see user interfaces
groupBy method
    on Traversable traits
grouped method
    on Iterable traits
    on trait Iterator
"Growing a language" (Steele)
GUI programming, see user interfaces
Guice

H

handlers, exception, see catch clauses
hasDefiniteSize method
    on trait Iterator
    on Traversable traits
hash consing
hashCode method

a b c d e f g h i j k l m n o p q r s t u v w x y z

    caching
    generated for case classes
    if overriding equals
    on class Any
        contract of
    recipe for writing
HashMap class
    in class hierarchy diagram
HashSet class
    creating and initializing immutable
    in class hierarchy diagram
Haskell language
Haskell language 1 2
    as a lazy functional language
hasNext method
    on trait Iterator
head method
    on class List 1 2 3
    on Traversable traits
headOption method
    on Traversable traits
Hejlsberg, Anders
Hibernate
hiding

a b c d e f g h i j k l m n o p q r s t u v w x y z

    names in import clauses
    names in nested packages
    variables in nested blocks
higher-kinded types, see http:// booksites.artima.com/ programming_in_scala_3ed
higher-order functions
higher-order methods
    on class List

I

identifiers
    alphanumeric
    capitalization conventions for
    literal (with back ticks)
    mixed
    operator
identity
    of objects, testing with eq method
idioms, see patterns and idioms
if expressions 1 2 3
immutability
    as functional style
    selecting mutable versus immutable collections
    trade-offs
imperative style
    combining with functional style

a b c d e f g h i j k l m n o p q r s t u v w x y z

    recognizing
    refactoring to functional style
implementation traits
implements keyword (Java), see mixin composition
implicit keyword
implicit conversion
    in-depth treatment
    to rich wrappers
implicit classes
implicit conversion 1 2
    a word of caution
    implicit classes
    quick introduction
implicit conversions
    when multiple apply
implicit parameters
implicit resolution
imports 1 2
    hiding clauses
    implicit 1 2
    on-demand (i.e., wildcard)
    renaming clauses
    selector clauses
incrementing

a b c d e f g h i j k l m n o p q r s t u v w x y z

    with += 1, not ++
IndexedSeqLike implementation trait
indexOf method
    on Seq traits
    on trait Iterator
indexOfSlice method
    on Seq traits
indexWhere method
    on Seq traits
    on trait Iterator
indices method
    on class List
    on Seq traits
inference
    semicolon 1 2
        turning off
    type 1 2
        Hindley-Milner style
        the algorithm
infix operator notation
information hiding 1 2
    with factory methods
inheritance
    and self types

a b c d e f g h i j k l m n o p q r s t u v w x y z

    extending classes
    mixing in traits
    versus composition
inheritance hierarchy diagram, see class hierarchy diagram
init method
    on class List 1 2
    on Traversable traits
initialization
    lazy
    of abstract vals
    of arrays
    of classes, see constructors
    of fields to default values
    of instance variables with constructor parameters, see class parameters
    of lists
    of maps
    of sets 1 2
    of traits
initializers
injections
inner classes
    accessing outer class members with a this alias
    and path-dependent types
    and private members

a b c d e f g h i j k l m n o p q r s t u v w x y z

    example of
    granting access to private members of inner classes
    private, to hide implementation
insert method
    on trait Buffer
insertAll method
    on trait Buffer
insertion sort 1 2
instance variables
instanceOf (Java), see type tests
Int class
integer literals
IntelliJ IDE
interfaces (Java), see traits
internal DSLs, see domain-specific languages
interoperability, Scala with Java
interpolated string literals
interpreter
intersect method
    on Seq traits
    on Set traits
invoking a superclass constructor
is-a relationships
isCompleted method

a b c d e f g h i j k l m n o p q r s t u v w x y z

    on trait Future
isDefinedAt method
    on Map traits
    on Seq traits
    on trait PartialFunction
isEmpty method
    on class List 1 2 3
    on Map traits
    on trait Iterator
    on Traversable traits
isInstanceOf method
    on class Any
iterable
    members
Iterable traits
    methods
        dropRight
        grouped
        iterator
        sameElements
        sliding
        takeRight
        zip
        zipAll

a b c d e f g h i j k l m n o p q r s t u v w x y z

        zipWithIndex
iterate method
    on Seq objects
iterator method
    members
    on class List
    on Iterable traits
    on mutable map
Iterator trait
    methods
        /: (fold left)
        : (fold right)
        addString
        buffered
        collect
        copyToArray
        copyToBuffer
        count
        drop
        dropWhile
        duplicate
        exists
        filter
        filterNot

a b c d e f g h i j k l m n o p q r s t u v w x y z

        find
        flatMap
        foldLeft
        foldRight
        forall
        grouped
        hasDefiniteSize
        hasNext
        indexOf
        indexWhere
        isEmpty
        length
        map
        max
        min
        mkString
        next
        nonEmpty
        padTo
        partition
        patch
        product
        reduceLeft
        reduceRight

a b c d e f g h i j k l m n o p q r s t u v w x y z

        sameElements
        size
        slice
        sliding
        sum
        take
        takeWhile
        toArray
        toIndexedSeq
        toIterable
        toList
        toMap
        toSeq
        toSet
        toStream
        withFilter
        zip
        zipAll
        zipWithIndex
        ++ (add elements)

J

Java language 1 2
    ANTLR
    concurrency utilities

a b c d e f g h i j k l m n o p q r s t u v w x y z

    exception handling
    Swing framework
    wildcards
    javac
Java 8 1 2
    default methods 1 2
    lambda expressions 1 2
    Stream interface
Java language
    bytecodes
    collections
    compiling with Scala
    covariance of arrays
    dependency injection in
    enumerations
    inner classes
    interfaces and Scala traits
    interoperability with Scala
    interoperability with Scala 1 2
    raw types 1 2
    static methods
    threading model
    throws keyword
    value types

a b c d e f g h i j k l m n o p q r s t u v w x y z

    wildcard types
Java Native Interface
Java Persistence Architecture
JavaBeans
JavaConversions object
JavaScript Object Notation, see JSON
JavaTokenParsers trait
JFlex
JNI
Joy, Bill
JSON
JUnit

K

Kay, Alan 1 2
keys method
    on Map traits 1 2
keySet method
    on Map traits 1 2
keysIterator method
    on Map traits
keywords, using as identifiers

L

Label class
LALR(1) parsers

a b c d e f g h i j k l m n o p q r s t u v w x y z

lambda calculus
lambda expressions
    in Java 8 1 2
Landin, Peter
last method
    on class List 1 2
    on Traversable traits
lastIndexOf method
    on Seq traits
lastIndexOfSlice method
    on Seq traits
lastOption method
    on Traversable traits
laws
layouts, in GUIs
lazy modifier
lazy functional languages
length method
    on class List 1 2
    on trait Iterator
lengthCompare method
    on Seq traits
Lex
lexical analysis

a b c d e f g h i j k l m n o p q r s t u v w x y z

lexical analysis
linearization, of traits
linked lists
linking
    of modules at runtime
Liskov Substitution Principle
    and equals method
Lisp language 1 2
List class, see also lists 1 2
    first-order methods on
    higher-order methods on
    immutability
    implementation of
    methods
        /: (fold left)
        ::: (concatenation) 1 2 3
        : (fold right)
        addString
        apply
        copyToArray
        count 1 2 3
        drop 1 2
        dropRight
        dropWhile

a b c d e f g h i j k l m n o p q r s t u v w x y z

        exists 1 2
        filter 1 2
        find
        flatMap
        flatten 1 2
        foldLeft
        foldRight
        forall 1 2
        foreach 1 2
        head 1 2
        indices
        init 1 2
        isEmpty 1 2
        iterator
        last 1 2
        length
        map 1 2
        mkString 1 2
        partition
        reduceLeft
        remove
        reverse 1 2
        sort
        sortWith

a b c d e f g h i j k l m n o p q r s t u v w x y z

        span
        splitAt
        tail 1 2
        take
        takeWhile
        toArray
        toString
        unzip
        zip
        zipWithIndex
        :: (cons) 1 2
List object
    methods
        apply 1 2 3
        concat
        fill
        range 1 2
        tabulate
ListBuffer class 1 2 3
listenTo method
    on Reactor 1 2
lists, see also List class 1 2
    appending to
    class hierarchy diagram

a b c d e f g h i j k l m n o p q r s t u v w x y z

    concatenation (:::)
    converting to arrays
    converting to strings
    creating and initializing
    diagram showing linked-list structure
    in-depth treatment
    passing elements as arguments with _*
    table of methods
ListView class
literal method
    on trait RegexParsers
literals
    array
    boolean
    character
    class, see classOf method
    floating point
    identifier
    integer
    interpolated string
    list
    string 1 2
    symbol
    XML

a b c d e f g h i j k l m n o p q r s t u v w x y z

little languages, see domain-specific languages
LL(1) grammars
loadFile method
    on XML
loan pattern 1 2
local functions
local variables
locks, and shared data
logical operations (&&, ||, !)
    on class Boolean
Long class
lower bounds
LowPriorityImplicits class
LSP, see Liskov Substitution Principle

M

magic numbers
main method
    of GUI applications
    of Scala applications
MainFrame class
    attributes
        contents
        title
map

a b c d e f g h i j k l m n o p q r s t u v w x y z

    members
map method
    on class List 1 2
    on trait Iterator
    on trait Future
    on Traversable traits
    translating for expressions to invocations of
Map objects 1 2
Map traits, see maps
    methods
        + (add element)
        ++ (add elements)
        - (remove element)
        — (remove elements)
        apply
        clear
        clone
        contains
        filterKeys
        get
        getOrElse
        getOrElseUpdate
        isDefinedAt
        keys

a b c d e f g h i j k l m n o p q r s t u v w x y z

        keySet
        keysIterator
        mapValues
        put
        remove
        retain
        update
        updated
        values
        valuesIterator
        ++= (add elements to)
        += (add element to)
        —= (remove elements from)
        -= (remove element from)
maps 1 2 3
    class hierarchy diagram
    creating and initializing immutable
    creating and initializing mutable
    in library, not language
    mutability modeled in hierarchy
    table of methods
mapValues method
    on Map traits
match expressions

a b c d e f g h i j k l m n o p q r s t u v w x y z

    in-depth coverage
    quick introduction
MatchError class
    and "not exhaustive" warning
    and extractors
    not thrown in for expressions 1 2
Matsumoto, Yukihiro
max method
    on class Int (via RichInt) 1 2 3
    on trait Iterator
    on Traversable traits
member functions, see methods
member variables, see fields
members
    abstract
    field
        initialization order of
    method
    no static
    type
merge sort
message passing
meta-programming
methods, see also functions 1 2

a b c d e f g h i j k l m n o p q r s t u v w x y z

    abstract
    as operators
    as procedures
    empty-paren
    first-order
    native
    overloading
    overriding
    parameterless
        overriding with vals 1 2
    parameters of
    private
    return from
    when to invoke with empty parentheses 1 2
Meyer, Bertrand
Meyers, Scott
min method
    on class Int (via RichInt) 1 2
    on trait Iterator
    on Traversable traits
mixed identifiers
mixin composition
    and self types
mixin composition, see also traits

a b c d e f g h i j k l m n o p q r s t u v w x y z

    and self types
    example of
    syntax for
mkString method
    on class List 1 2
    on trait Iterator
    on Traversable traits 1 2
mock objects
modules
    runtime linking
monads
monitors
Multi-Java language
multi-threaded programming, see concurrency
multicore
multiple return values 1 2
multiple variable definitions
multiple-line statements
mutability
    and equals
    of collections
    of object state

N

named arguments

a b c d e f g h i j k l m n o p q r s t u v w x y z

namespaces
    in C#
    Scala's two instead of Java's four
naming conventions
NaN (not a number) 1 2
native annotation
ne method
    on class AnyRef 1 2
nested annotations
nesting
    of classes and objects
    of functions
    of packages
.NET 1 2 3
NetBeans IDE
new keyword
    not needed when calling factory methods
    not needed with case classes
next method
    on trait Iterator
Nice language
Nil object 1 2 3 4
Nilsson, Rickard
Node class

a b c d e f g h i j k l m n o p q r s t u v w x y z

NodeSeq class
nominal subtyping
None object
    in extractors
nonEmpty method
    on trait Iterator
    on Traversable traits
nonvariance
Nothing type
    as result type of throw expressions
    as type parameter of List
    in Scala class hierarchy diagram
Null class
    in Scala class hierarchy diagram
null value
    in equals methods
    using Option instead for optional values
NullPointerException, preventing

O

Object class, see also AnyRef class
    in Scala class hierarchy diagram
object keyword
object-oriented programming
object-oriented programming 1 2

a b c d e f g h i j k l m n o p q r s t u v w x y z

Object-Oriented Software Construction (Meyer)
object-private access with private[this]
objects
    annotating
    companion, see companion objects
    domain
    entity
    equality of, see equality
    functional (immutable)
    immutable
    mock, in testing
    mutable
    serializing
    singleton, see singleton objects
    standalone
OCaml language 1 2 3
on-demand import
onComplete method
    on trait Future
operator
    associativity
    example: class Rational with operator methods
    identifiers
        when to use

a b c d e f g h i j k l m n o p q r s t u v w x y z

    notation 1 2 3
        infix
        postfix
        prefix
    "overloading"
    precedence 1 2
        table of
opt method
    on trait Parsers
optimization
    of tail recursion
        turning off with notailcalls
    of value types
Option class
Ordered trait 1 2 3
outer classes, see inner classes
overloading
    constructors
    methods
    "operator"
override modifier 1 2
    on parametric fields
overriding
    defs with vals 1 2

a b c d e f g h i j k l m n o p q r s t u v w x y z

    methods and fields
    equals method

P

package objects
package clauses 1 2
package-private access (Java)
packages
    as modules
    hiding
    implicitly imported
    unnamed package
packaging
padTo method
    on Seq traits
    on trait Iterator
pair, name for Tuple2
Panel class
parallel programming
parallel collections 1 2
parameterization
    with types
    with values
parameterized types
    and object equality

a b c d e f g h i j k l m n o p q r s t u v w x y z

parameterless methods
    overriding with vals 1 2
parameters
    by-name 1 2
    by-value
    class, see class parameters
    default values
    implicit 1 2 3
    named
    repeated 1 2
        vararg matching
    type
    versus arguments
parametric fields 1 2
parentheses
    using curly braces instead of
    when to use on method calls 1 2
parser combinators
parser generators
Parser class
parser combinators 1 2
ParseResult class
parsers
Parsers trait 1 2

a b c d e f g h i j k l m n o p q r s t u v w x y z

partial functions
PartialFunction trait 1 2
partially applied functions 1 2
partition method
    on class List
    on trait Iterator
    on Traversable traits
passing arguments
    to superclass a constructor
patch method
    on Seq traits
    on trait Iterator
path-dependent types
    and inner classes
Patricia tries
pattern matching
    and extractors
    in exception handling
    in lists
    in equals method
pattern guards
pattern matching
    constant patterns 1 2
    constructor patterns 1 2

a b c d e f g h i j k l m n o p q r s t u v w x y z

    examples of 1 2
    in equals method
    in event handling
    in for expressions 1 2
    in lists
    in variable definitions
    in-depth coverage
    on XML
    quick introduction
    sequence patterns
    tuple patterns
    typed patterns
    variable patterns 1 2
    variable-binding patterns
    wildcard patterns 1 2
patterns and idioms
    divide and conquer principle
    ensuring a resource is closed
patterns and idioms
    conditional initialization
    functional on the outside, imperative on the inside
    loan pattern 1 2
    reading lines, characters, etc., with do-while
    rich wrappers pattern 1 2

a b c d e f g h i j k l m n o p q r s t u v w x y z

    using Option not null to indicate optional values
performance
    and multi-core processors
    of collection types
    of Scala compared to Java
Perl language 1 2
Pizza language
placeholder syntax
    in wildcards
    in function literals 1 2
PLT-Scheme language
pointers, see references
polymorphism
    and type inference
pop method
    on class Stack
postconditions, see ensuring method
postfix operator notation
pre-initialized fields
precedence, operator 1 2
    table of
preconditions
Predef object
    methods

a b c d e f g h i j k l m n o p q r s t u v w x y z

        ???
        assert 1 2
        classOf
        ensuring
        println
predicates
prefix operator notation
prefixLength method
    on Seq traits
primary constructors
    private
primitive types
private modifier
    and inner classes
    augmented with qualifiers, i.e., private[meeting]
    granting access to private members of inner classes
    in modules
    object-private access with private[this]
    on constructors
    on fields 1 2
    on methods
    on parametric fields
procedures
processed string literals

a b c d e f g h i j k l m n o p q r s t u v w x y z

product method
    on trait Iterator
    on Traversable traits
programming style
    imperative
    modular
programming in the large
programming in the small
programming style
    functional
Promise trait
    methods
        completeWith
        complete
        failure
        future
        success
pronunciation of Scala
properties 1 2 3
    verifiable with static typing
protected modifier
    on parametric fields
public access
Publisher trait

a b c d e f g h i j k l m n o p q r s t u v w x y z

push method
    on class Stack
put method
    on trait mutable.Map
putIfAbsent method
    on trait ConcurrentMap
Python language 1 2

Q

Queue class

R

r method
    on class String (via StringOps)
range method
    on object List
    on object List
    on Seq objects
ranges, of basic types
raw string interpolator
raw strings
    in regular expressions
raw types (Java) 1 2
Raymond, Eric 1 2
reactions property
    on Reactor

a b c d e f g h i j k l m n o p q r s t u v w x y z

    on Reactor
Reactor trait
Reader class
reading
    from standard input with do-while
    lines from a file
receive method
    on trait Actor
recommended style, see style recommendations
recover method
    on trait Future
recoverWith method
    on trait Future
recursion, see recursion
    in combinator parsers
    tail
        optimization
    using ListBuffer to prevent stack overflow
reduce method
    on object Future
reduceLeft method
    on class List
    on trait Iterator
    on Traversable traits

a b c d e f g h i j k l m n o p q r s t u v w x y z

reduceRight method
    on trait Iterator
    on Traversable traits
refactoring
    and static typing
    and vals
    imperative to functional style
    reducing code duplication with closures
reference
    classes
    definition of
    equality 1 2 3
referential transparency
refinement types
reflection
Regex class
regex method
    on trait RegexParsers
RegexParsers trait 1 2 3
regular expressions
    as parsers 1 2
relational operations (>, <, >=, <=)
    on numeric types
    on trait Ordered

a b c d e f g h i j k l m n o p q r s t u v w x y z

remove method
    on class List
    on trait ConcurrentMap
    on trait mutable.Map
    on trait mutable.Set
    on trait Buffer
rendererComponent method
    on class Table
rep method
    on trait Parsers
repeated parameters 1 2
    vararg matching
replace method
    on trait ConcurrentMap
representation independence
repsep method
    on trait Parsers
require method
    on object Predef
resources, ensuring release of 1 2
result type
    covariance of
retain method
    on trait mutable.Map

a b c d e f g h i j k l m n o p q r s t u v w x y z

    on trait mutable.Set
return keyword
return type
returning multiple values 1 2
reverse method
    on class List 1 2
    on Seq traits
reverseIterator method
    on Seq traits
reverseMap method
    on Seq traits
rich wrappers pattern 1 2
RichInt class, see Int class
rowHeaderView property
    on class ScrollPane
Ruby language 1 2 3
Rumbaugh, James
running a Scala program, see scala
runtime type, definition of

S

s string interpolator
SAM types, see single abstract method types
sameElements method
    on Iterable traits

a b c d e f g h i j k l m n o p q r s t u v w x y z

    on trait Iterator
save method
    on XML
Scala language
    compiling
    scalability of
scala (Scala launcher)
    to launch applications
    to launch scripts
    to launch the interpreter
Scala language
    2.12 release 1 2 3 4 5
    class hierarchy diagram
    compatibility with Java
    compatibility with Java 1 2
    compiling
        with Java
    conciseness versus Java
    downloading
    IDEs
    influences on
    interpreter shell
    naming of source files
    pronunciation of "Scala"

a b c d e f g h i j k l m n o p q r s t u v w x y z

    scalability of 1 2
    scripts, see scripts, Scala
    specification
Scala.js 1 2
scalability
    of configuration
    of Scala language 1 2 3
    of teams
scalac (Scala compiler)
ScalaCheck 1 2
Scaladoc
ScalaTest 1 2
scanner generators
Scheme language
scope
    of implicit conversions
    of variables
scripts, Scala 1 2
    running on Unix
    running on Windows
ScrollPane class 1 2
sealed classes
sealed modifier 1 2
segmentLength method

a b c d e f g h i j k l m n o p q r s t u v w x y z

    on Seq traits
selectors
    in match expressions
selectors, in imports
self types
self references
self types 1 2
semi-structured data
semicolon inference
    turning off
seq
    factory
    members
Seq objects
    methods
        apply
        concat
        empty
        fill
        iterate
        range
        tabulate
Seq traits
    methods

a b c d e f g h i j k l m n o p q r s t u v w x y z

        +: (prepend)
        :+ (append)
        apply
        contains
        containsSlice
        corresponds
        diff
        distinct
        endsWith
        indexOf
        indexOfSlice
        indexWhere
        indices
        intersect
        isDefinedAt
        lastIndexOf
        lastIndexOfSlice
        lengthCompare
        padTo
        patch
        prefixLength
        reverse
        reverseIterator
        reverseMap

a b c d e f g h i j k l m n o p q r s t u v w x y z

        segmentLength
        sortBy
        sorted
        sortWith
        startsWith
        union
        update
        updated
sequence method
    on object Future
sequence patterns
serializable annotation 1 2
serialization
    binary
    to and from XML
SerialVersionUID annotation
set
    members
Set objects 1 2
Set traits, see sets
    methods
        add
        clear
        clone

a b c d e f g h i j k l m n o p q r s t u v w x y z

        contains
        diff
        empty
        intersect
        remove
        retain
        subsetOf
        union
        update
        | (union)
        &~ (diff)
        & (intersect)
        ++= (add elements to)
        ++ (add elements)
        += (add element to)
        —= (remove elements from)
        — (remove elements)
        -= (remove element from)
        - (remove element)
        + (add element)
sets 1 2
    and generic types
    class hierarchy diagram
    creating and initializing immutable

a b c d e f g h i j k l m n o p q r s t u v w x y z

    creating and initializing mutable
    mutability modeled in hierarchy
    table of methods
setter methods 1 2 3 4
shadowing variables
shared data and locks
shell, Scala interpreter
shift operations (<<, >>, >>>)
    on integral types
short circuiting, of logical operations
Short class
side effects 1 2 3
    minimizing
SimpleSwingApplication class 1 2
Simula language
single abstract method types
singleton objects
    as modules
singleton objects
    as seen from Java
    in testing
    initialization semantics
    nesting of
    shown with rounded corners in hierarchy diagrams

a b c d e f g h i j k l m n o p q r s t u v w x y z

singleton types 1 2
size method
    on Set traits
    on trait Iterator
    on Traversable traits
slice method
    on trait Iterator
    on Traversable traits
sliding method
    on Iterable traits
    on trait Iterator
Smalltalk language 1 2
SML language
snoc
Some class
    in extractors
sort
    insertion 1 2
    merge
sort method
    on class List
sortBy method
    on Seq traits
sorted method

a b c d e f g h i j k l m n o p q r s t u v w x y z

    on Seq traits
SortedMap trait
SortedSet trait
sortWith method
    on class List
    on Seq traits
source code, downloading, see example code
source files, naming of
Source object
span method
    on class List
    on Traversable traits
specifiers, access, see access modifiers
specs2 1 2
split method
    on class String
splitAt method
    on class List
    on Traversable traits
spreadsheets
Spring Framework
Spring Framework
Stack class
stack, the

a b c d e f g h i j k l m n o p q r s t u v w x y z

    and tail-recursive functions 1 2
    and thrown exceptions
    and variables captured by closures
stackable modifications
standalone objects
standard error stream
startsWith method
    on Seq traits
statements
    multiple-line
static members
static typing
Steele, Guy 1 2
Stream class
    in Scala 1 2
Stream interface
    in Java 8
String class
    methods
        r (via StringOps)
        stripMargin (via StringOps)
StringBuilder class
stringLiteral method
    in trait JavaTokenParsers

a b c d e f g h i j k l m n o p q r s t u v w x y z

stringly typed code
StringOps class, see also String class 1 2
stringPrefix method
    on Traversable traits
strings
    formatting
    interpolated (processed)
    iterating through the characters of
    literals 1 2
    long
    raw 1 2
    treating as a sequence (via WrappedString)
    treating like a sequence (via StringOps) 1 2
structural subtyping
Structure and Interpretation of Computer Programs (Abelson, et. al.)
style recommendations
    prefer alphabetic names unless symbolic names have established meaning
    prefer classes to tuples when data combination has meaning
    prefer vals, immutable objects, and methods without side effects
    use implicit conversions with restraint
subclasses
    and equals method
    defining
subsetOf method

a b c d e f g h i j k l m n o p q r s t u v w x y z

    on Set traits
subtyping
    and type parameters
    nominal vs. structural
    versus subclassing
subtyping polymorphism
Success class
success method
    on trait Promise
successful method
    on object Future
sum method
    on trait Iterator
    on Traversable traits
super references
    special treatment in traits
superclasses
    invoking constructor on
supertype
Sussman, Gerald J. 1 2
Swing 1 2
    methods
        EmptyBorder
switch statement (Java)

a b c d e f g h i j k l m n o p q r s t u v w x y z

symbol literals
symbolic versus alphabetic names
syntactical analysis

T

Table class 1 2
TableUpdated class
tabulate method
    on object List
    on Seq objects
tags, XML
tail recursion
tail method
    on class List 1 2 3
    on Traversable traits
tail recursion 1 2
    optimization
        turning off with notailcalls
        verifying with @tailrec
tailrec annotation
take method
    on class List
    on trait Iterator
    on Traversable traits
takeRight method

a b c d e f g h i j k l m n o p q r s t u v w x y z

    on Iterable traits
takeWhile method
    on class List
    on trait Iterator
    on Traversable traits
target typing
template, definition of
term, in function literals
Test annotation
    in JUnit 4
test suites
testing 1 2
    integration
    unit
    with mock objects
    with singletons
Text class
text method
    on class Node
text processing in XML
text processing in XML
TextField class
Thinking in Java (Eckel)
this

a b c d e f g h i j k l m n o p q r s t u v w x y z

    aliasing
    and self types
throw expressions
throws annotation
tiny types
to method
    on class Int (via RichInt) 1 2 3
toArray method
    on class List
    on trait Iterator
    on Traversable traits
toChar method
    on class Int
toIndexedSeq method
    on trait Iterator
    on Traversable traits
toInt method
    on class String (via StringOps)
toIterable method
    on trait Iterator
    on Traversable traits
toList method
    on class ListBuffer
    on class Array 1 2

a b c d e f g h i j k l m n o p q r s t u v w x y z

    on class ListBuffer
    on trait Iterator
    on Traversable traits
toMap method
    on trait Iterator
    on Traversable traits
top method
    on class Stack
top method
    on class SimpleSwingApplication
Torreborre, Eric
toSeq method
    on trait Iterator
    on Traversable traits
toSet method
    on trait Iterator
    on Traversable traits
toStream method
    on trait Iterator
    on Traversable traits
toString method 1 2
    generated for case classes
    on class Any
    overriding

a b c d e f g h i j k l m n o p q r s t u v w x y z

total function, see complete function
traits, see also mixin composition 1 2
    and abstract parameters
    and Java interfaces
    annotating
    generic 1 2
    implementation
    initializing
    linearization of
    mixing in
transform method
    on trait Future
transformers
transformWith method
    on trait Future
transient annotation
Traversable traits
    methods
        /: (fold left)
        : (fold right)
        addString
        collect
        copyToArray
        copyToBuffer

a b c d e f g h i j k l m n o p q r s t u v w x y z

        count
        drop
        dropWhile
        exists
        filter
        filterNot
        find
        flatMap
        foldLeft
        foldRight
        forall
        foreach
        groupBy
        hasDefiniteSize
        head
        headOption
        init
        isEmpty
        last
        lastOption
        map
        max
        min
        mkString

a b c d e f g h i j k l m n o p q r s t u v w x y z

        nonEmpty
        partition
        product
        reduceLeft
        reduceRight
        size
        slice
        span
        splitAt
        stringPrefix
        sum
        tail
        take
        takeWhile
        toArray
        toIndexedSeq
        toIterable
        toList
        toMap
        toSeq
        toSet
        toStream
        view 1 2
        withFilter

a b c d e f g h i j k l m n o p q r s t u v w x y z

        ++ (add elements)
TraversableLike implementation trait
traverse method
    on object Future
TreeMap class
TreeSet class
trimEnd method
    on trait Buffer
trimStart method
    on trait Buffer
true value
Try class
    class hierarchy diagram
try expressions
tuple patterns
tuples
    creating and using
    one-based element access
    result of -> operation
    when to use a class instead
    zipped method on
type constructors
type parameters
    lower bounds

a b c d e f g h i j k l m n o p q r s t u v w x y z

type aliases 1 2 3
type annotations 1 2 3
    for debugging
type casts, see casting
type erasure
type inference 1 2
    Hindley-Milner style
    the algorithm
type keyword
    in singleton types, such as db.type
    in type alias definitions 1 2
type members
type parameterization, see parameterized types
type parameters
    in parser results
    upper bounds
type tests
    with isInstanceOf
    with typed patterns (preferred style)
type-driven design
typed patterns
types
    abstract
    bottom

a b c d e f g h i j k l m n o p q r s t u v w x y z

    erasure
    generic
    ground
    in for expressions
    integral
    numeric
    path-dependent
    primitive
    refinement
    result
    return
    runtime
    self 1 2 3
    singleton
    static
    wildcard 1 2
typing
    dynamic 1 2 3
    static
    target

U

Ullman, Jeffrey
unapply method
    in extractors

a b c d e f g h i j k l m n o p q r s t u v w x y z

unapplySeq method
    in extractors
unary operations 1 2
unchecked annotation 1 2 3 4
Unicode
Unified Modeling Language Reference Manual, The (Rumbaugh, et. al.)
uniform access principle
union method
    on Seq traits
    on Set traits
Unit class
unit testing 1 2 3
unit value
unnamed package
until method
    on class Int (via RichInt) 1 2 3
unzip method
    on class List
update method
    on class Array
    on Seq traits
    on trait mutable.Map
    on trait mutable.Set
updated method

a b c d e f g h i j k l m n o p q r s t u v w x y z

    on Map traits
    on Seq traits
upper bounds
user interfaces
    reactive programming
user interfaces 1 2
    reactive programming

V

vals, see also variables
    abstract
    annotating
    as fields
    conditional initialization of
    defining
    lazy
    preferring over vars
    referencing mutable objects
    "val" on class parameters
Value class
value classes
value method
    on trait Future
value parameterization
ValueChanged class

a b c d e f g h i j k l m n o p q r s t u v w x y z

values method
    on class Enumeration
    on Map traits 1 2
valuesIterator method
    on Map traits
van Rossum, Guido
vararg matching
variable patterns 1 2
variable-binding patterns
variable-length arguments, or "varargs", see repeated parameters
variables
    bound 1 2
    captured by closures
    defining
        using patterns 1 2
    fields
    final (Java), see vals
    free
    instance
    local
    multiple definitions of
    reassignable, see also vars
    scope
    shadowing

a b c d e f g h i j k l m n o p q r s t u v w x y z

variance
    annotations
        compiler checking of 1 2
    declaration-site
    use-site
vars, see also variables
    abstract
    and mutable objects
    annotating
    as fields
    defining
    on class parameters
    programming without
Vector class
verifiable properties
view method
    on Traversable traits 1 2
viewportView property
    on class ScrollPane
views
virtual classes
volatile annotation 1 2

W

Wall, Larry

a b c d e f g h i j k l m n o p q r s t u v w x y z

warnings, see compiler warnings
weak hash maps
while loops 1 2
    as imperative style
wildcard patterns 1 2
wildcard types 1 2
wildcard types (Java)
Wirth, Niklaus
with keyword
withFilter method
    on trait Future
    on trait Iterator
    on Traversable traits
    translating for expressions to invocations of
WrappedString class

X

XML
    attributes 1 2
    character encoding
    configuration files
    configuration files
    deserialization
    elements
    literals

a b c d e f g h i j k l m n o p q r s t u v w x y z

    pattern matching
    serialization
    tags
    text
    using an at sign (@) to extract attributes
    using curly braces ({}) in pattern matching
    XPath
XML object
    methods
        loadFile
XML object
    methods
        save
XPath

Y

Yacc
yield keyword
    in for expressions
    in for expressions

Z

zip method
    on class List
    on Iterable traits
    on trait Iterator

a b c d e f g h i j k l m n o p q r s t u v w x y z

    on trait Future
zipAll method
    on Iterable traits
    on trait Iterator
zipped method
    on tuples
zipWith method
    on trait Future
zipWithIndex method
    on class List
    on Iterable traits
    on trait Iterator