How to Remove Specific Item from a Set in Rust - Step by Step Examples

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How to Remove Specific Item from a Set in Rust ?

Answer

To remove a specific item from a set in Rust, you can use the remove method to delete the item from the set.

✐ Examples

1 Removing Item from Integer Set

In this example,

We create a set named number_set using the HashSet type from the Rust Standard Library, which contains integer values 1, 2, 3, 4, and 5.
We use the remove method of number_set to remove the item 3 from the set.
Finally, we print the modified set number_set to see the removed item.

Rust Program

use std::collections::HashSet;

fn main() {
    let mut number_set: HashSet<i32> = [1, 2, 3, 4, 5].iter().cloned().collect();
    number_set.remove(&3);

    println!("{:?}", number_set);
}

Output

{1, 2, 4, 5}

2 Removing Item from String Set

In this example,

We create a set named string_set using the HashSet type from the Rust Standard Library, which contains string values "apple", "banana", "cherry", "date", and "grape".
We use the remove method of string_set to remove the item "cherry" from the set.
Finally, we print the modified set string_set to see the removed item.

Rust Program

use std::collections::HashSet;

fn main() {
    let mut string_set: HashSet<&str> = ["apple", "banana", "cherry", "date", "grape"].iter().cloned().collect();
    string_set.remove("cherry");

    println!("{:?}", string_set);
}

Output

{"apple", "banana", "date", "grape"}

Summary

In this tutorial, we learned How to Remove Specific Item from a Set in Rust language with well detailed examples.

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