How to Trim a String in Rust - Step by Step Examples

How to Trim a String in Rust ?

To trim a string in Rust, you can use the trim(), trim_start(), and trim_end() methods of the str type.

In this example,

We assign a string value of " Hello World " to the variable str1.
We then use the trim() method on str1 to remove leading and trailing whitespace characters.
Finally, we print the trimmed string.

fn main() {
    let str1 = "   Hello World   ";
    let trimmed_str1 = str1.trim();
    println!("Trimmed string is: '{}'", trimmed_str1);
}

Trimmed string is: 'Hello World'

In this example,

We assign a string value of " apple" to the variable str2.
We then use the trim_start() method on str2 to remove leading whitespace characters.
Finally, we print the trimmed string.

fn main() {
    let str2 = "   apple";
    let trimmed_str2 = str2.trim_start();
    println!("Trimmed string is: '{}'", trimmed_str2);
}

Trimmed string is: 'apple'

In this example,

We assign a string value of "banana " to the variable str3.
We then use the trim_end() method on str3 to remove trailing whitespace characters.
Finally, we print the trimmed string.

fn main() {
    let str3 = "banana   ";
    let trimmed_str3 = str3.trim_end();
    println!("Trimmed string is: '{}'", trimmed_str3);
}

Trimmed string is: 'banana'

In this tutorial, we learned How to Trim a String in Rust language with well detailed examples.