rustHow to pop an element from a Rust HashMap?

To pop an element from a Rust HashMap, you can use the remove method. This method takes a key as an argument and returns the corresponding value if it exists.

Example code

let mut map = HashMap::new();
map.insert("key1", "value1");
map.insert("key2", "value2");

let value = map.remove("key1");

Output example

Some("value1")

Code explanation

• let mut map = HashMap::new();: creates a new empty HashMap
• map.insert("key1", "value1");: inserts a key-value pair into the HashMap
• map.insert("key2", "value2");: inserts another key-value pair into the HashMap
• let value = map.remove("key1");: removes the key-value pair with the key "key1" from the HashMap and stores the value in the variable value

Helpful links

• Rust HashMap documentation

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