If you imagine a Vec as a collection that assigns an index (0, 1, 2, and so on) to data, the HashMap is a collection that assigns any data to any data. It allows you to map arbitrary, hashable data to other arbitrary data. Hashing and mapping, that's where the name comes from!
- Title Page
- Copyright and Credits
- Packt Upsell
- Contributors
- Preface
- Learning the Basics
- Introduction
- Concatenating strings
- Using the format! macro
- Providing a default implementation
- Using the constructor pattern
- Using the builder pattern
- Parallelism through simple threads
- Generating random numbers
- Querying with regexes
- Accessing the command line
- Interacting with environment variables
- Reading from stdin
- Accepting a variable number of arguments
- Working with Collections
- Handling Files and the Filesystem
- Serialization
- Advanced Data Structures
- Handling Errors
- Parallelism and Rayon
- Working with Futures
- Networking
- Using Experimental Nightly Features
- Other Books You May Enjoy
Using a HashMap
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