rust convert a string (with decimals) to a floating point number.

To convert a string with decimals to a floating point number in Rust, you can use the parse method from the str type, followed by the unwrap method to handle potential errors. Here's an example:

fn main() {
    let num_str = "3.14";
    let num: f64 = num_str.parse().unwrap();
    println!("The parsed number is: {}", num);
}

In this example, the parse method is called on the num_str string, and it attempts to convert it into a floating point number. The unwrap method is used to handle any errors that may occur during the parsing process. Finally, the parsed number is printed using println!.

I hope this helps!