rustHow do I check if a string contains a certain substring in Rust?

You can use the contains() method to check if a string contains a certain substring in Rust.

Example

let my_string = "Hello World";

if my_string.contains("World") {
    println!("The string contains the substring!");
}

Output example

The string contains the substring!

The contains() method takes a &str as an argument and returns a bool indicating whether the string contains the substring.

Code explanation

• let my_string = "Hello World";: This declares a variable my_string and assigns it the value "Hello World".
• if my_string.contains("World") {: This checks if the string my_string contains the substring "World".
• println!("The string contains the substring!");: This prints the message "The string contains the substring!" if the string contains the substring.

Helpful links

• Rust Documentation - Strings

Edit this code on GitHub