rustHow can I convert a string to a number in Rust?
You can convert a string to a number in Rust using the parse
method. This method is available on all types that implement the FromStr
trait. For example, to convert a string to an integer:
let s = "42";
let n: i32 = s.parse().unwrap();
println!("{}", n);
Output example
42
The code above consists of the following parts:
let s = "42";
- This declares a variables
of type&str
and assigns it the value"42"
.let n: i32 = s.parse().unwrap();
- This declares a variablen
of typei32
and assigns it the result of parsing the strings
into an integer. Theunwrap
method is used to handle any errors that may occur during the parsing process.println!("{}", n);
- This prints the value ofn
to the console.
For more information, see the Rust documentation.
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