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Rust program to delete all items from HashSet

Rust | HashSet Example: Write a program to delete all items from HashSet.
Last Updated : October 26, 2021

Problem Statement

In this program, we will create a HashSet to store integer items, and then we will insert items using the insert() method and delete all items from HashSet using the clear() method.

Program/Source Code

The source code to delete all items from HashSet is given below. The given program is compiled and executed successfully.

// Rust program to delete all items 
// from HashSet

use std::collections::HashSet;

fn main() {
    let mut set:HashSet<i32> = HashSet::new();
    
    set.insert(10);
    set.insert(20);
    
    println!("HashSet items: \n{:?}",set);
    
    set.clear();
    
    println!("HashSet items: \n{:?}",set);
}

Output

HashSet items: 
{10, 20}
HashSet items: 
{}

Explanation

Here, we created a HashSet to store integer elements. Then we added items using the insert() method. After that, we removed all items from HashSet using the clear() method and printed update HashSet.

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