Arithmetic operators are used for calculations with numeric values. In some cases, they can also be used with strings, arrays, and hash tables:
|
Operator |
Meaning |
Description |
|
+
|
Add
|
Adds numeric object. Concetenates strings, arrays, and hash tables. |
|
-
|
Subtract and negate
|
Subtracts numeric values. Negates numbers. |
|
*
|
Multiply
|
Multiplies numeric values. Multiplies strings and arrays the specified number of times. |
|
/
|
Divide
|
Divides numeric objects with the specified rounding. |
|
%
|
Modulo
|
Returns the remainder of a division. |
|
-shl
|
Shift-left
|
Moves all bits n places to the left. |
|
-shr
|
Shift-right
|
Moves all bits n places to the right. |
|
()
|
Parentheses
|
Mathematical precedence order. |
Some examples are as follows:
#region arithmetic operators with numeric values
# add
133 + 877 # 1000
2 + "file" # ERROR
# subtract
1337 - 337 # 1000
# multiply
3 * 9 # 27
3 + 3 * 3 # 12 -> punctuation is respected 3 + (3 * 3)
# divide
3 + 3 / 3 # 4 -> punctuation is respected 3 + (3 / 3)
# negative number
-17 + 5 # -12
# modulo
17 % 6 # 5 -> 12/6 -> 5 left
# shift-left
2 -shl 1 # 4 bits 00000010 -> 00000100
3 -shl 1 # 6 bits 00000011 -> 00000110
# shift-right
65 -shr 1 # 32 bits 00100001 -> 00100000
66 -shr 2 # 16 bits 01000010 -> 00010000
#endregion
#region arithmetic operators with strings
# add
"word" + "chain" # "wordchain"
"word" + 2 # "word2"
# subtract
"wordchain" - "chain" # ERROR
#divide
"wordchain" / "chain" # ERROR
#multiply
"wordchain" * 2 # "wordchainwordchain"
"wordchain" * "w" # ERROR
#shift
"wordchain" -shr 1 # ERROR
#endregion
#region arithmetic operators with arrays / hashtables
# this creates an array with the values 123 and "test"
123, "test"
# add
123, "test" + 3 # 123, "test", 3
# subtract
123, "test" - 123 # ERROR
# divide
123, "test" / 123 # ERROR
# multiply
123, "test" * 2 # 123, "test", 123, "test"
#endregion
#region operator precedence
- (12 + 3) # -15
- 12 + 3 # -9
6 + 6 / 3 # 8
(6 + 6) / 3 # 4
#endregion
The example includes three different areas, for numeric values, strings, and arrays or hash tables. The usage of arithmetic operators is very straightforward, and it only gets a little bit complicated if you are not working with numeric values. Keep these issues in mind and retrieve the types of your objects, if you encounter similar issues.