Question

How to check if a value is an ASCII hexadecimal digit character in Rust

Answer 1

fn main() {
    let mut val = b'A';
    println!("{}", val.is_ascii_hexdigit());
    
    val = b'a';
    println!("{}", val.is_ascii_hexdigit());
    
    val = b'0';
    println!("{}", val.is_ascii_hexdigit());
    
    val = b'\n';
    println!("{}", val.is_ascii_hexdigit());
}





/*
run:

true
true
true
false

*/

 

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