Rust Data StructuresLesson 26Free preview

Rust HashMap

This lesson is part of Rust · All levels

Summary

This lesson reviews the hashmap data structure in Rust that stores key and value pairs. The key must be unique and apply hashing functionality to instantaneous data search. Developers will learn how to import HashMap from a standard library, insert data, and safely update values.

Key points

HashMap stores data in the form of Key-Value pairs
Must be imported explicitly from 'std::collections::HashMap'
Enter the data using the '.insert' method
The '.entry().or_insert() method makes it easier to add data if the key is not yet available

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