How to Convert a Set of Integers to a Set of Strings in Rust - Step by Step Examples

How to Convert a Set of Integers to a Set of Strings in Rust ?

Answer

In Rust, you can convert a set of integers to a set of strings by mapping each integer to its string representation using the to_string() method.


✐ Examples

1 Convert Set of Integers to Set of Strings

In this example,

  1. We have a set of integers named int_set.
  2. We use the iter() method to create an iterator over the elements of int_set.
  3. We use the map() method along with the to_string() method to convert each integer element to its string representation.
  4. We collect the mapped elements into a new set of strings using the collect() method.

Rust Program

use std::collections::HashSet;

fn main() {
    // Set of integers
    let int_set: HashSet<i32> = [1, 2, 3, 4, 5].iter().cloned().collect();
    
    // Convert set of integers to set of strings
    let string_set: HashSet<String> = int_set.iter()
                                            .map(|x| x.to_string())
                                            .collect();
    
    // Print the set of strings
    for s in &string_set {
        println!("{}", s);
    }
}

Output

1
2
3
4
5

2 Convert Empty Set to Set of Strings

In this example,

  1. We have an empty set of integers named empty_set.
  2. The resulting set of strings will also be empty.

Rust Program

use std::collections::HashSet;

fn main() {
    // Empty set of integers
    let empty_set: HashSet<i32> = HashSet::new();
    
    // Convert empty set to set of strings
    let empty_string_set: HashSet<String> = empty_set.iter()
                                                      .map(|x| x.to_string())
                                                      .collect();
    
    // Print the empty set of strings (will be empty)
    for s in &empty_string_set {
        println!("{}", s);
    }
}

Summary

In this tutorial, we learned How to Convert a Set of Integers to a Set of Strings in Rust language with well detailed examples.


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