convert string to i32 rust

To convert a string to an i32 in Rust, you can use the parse method provided by the str type, followed by the unwrap method to extract the resulting value. Here's an example:

let my_string = "42";
let my_integer: i32 = my_string.parse().unwrap();

This code assumes that my_string contains a valid representation of an i32 value. If the string cannot be parsed as an i32, the parse method will return a Result type, which you can handle accordingly.