rustHow to lock a Rust HashMap?
A Rust HashMap can be locked using a Mutex
or RwLock
.
Example code using a Mutex
:
use std::collections::HashMap;
use std::sync::Mutex;
let mut map = HashMap::new();
let mutex = Mutex::new(map);
The code above creates a HashMap
and a Mutex
to lock it.
To access the HashMap
while it is locked, use the lock
method of the Mutex
:
let mut guard = mutex.lock().unwrap();
guard.insert(1, "one");
The code above acquires a lock on the Mutex
and inserts a key-value pair into the HashMap
.
Helpful links
Related
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- How to use a custom hash function with a Rust HashMap?
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- How to convert a Rust HashMap to a BTreeMap?
- How to create a HashMap of HashMaps in Rust?
- How to insert an element into a Rust HashMap if it does not already exist?
- How to build a Rust HashMap from an iterator?
- How to convert a Rust HashMap to a JSON string?
- How to compare two Rust HashMaps?
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See more codes...