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How to convert a String to int in Rust?

To convert a string to an int in Rust you can directly use the str::parse::() method.

Example of converting String to Int in Rust



fn main() {
    let my_string = "35".to_string();  // `parse()` works with `&str` and `String`!
    let my_int = my_string.parse::<i32>().unwrap();
}


You can can also specify the type to parse to with the turbofish operator (::<>) as shown above or via explicit type annotation:


fn main() {
    let my_string = "35".to_string();  // `parse()` works with `&str` and `String`!
    let my_int: i32 = my_string.parse().unwrap();
}

Conclusion

In this page (written and validated by ) you learned about How to convert a String to int in Rust? . What's Next? If you are interested in completing Rust tutorial, we encourage you simply to start here: Rust Tutorial.



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