Question

How to get the first word from a string in Rust

Answer 1

fn main() {
    let s = "rust javascript php c c++ python";
    
    if let Some(index) = s.find(' ') {
        println!("{}", &s[..index]);
    }
}


  
/*
run:

rust

*/

 

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Answer 2

fn main() {
    let s = "rust javascript php c c++ python";
    
    let first_word = s
    .split_whitespace()
    .next()
    .unwrap_or("");

    println!("{}", first_word);
}


  
/*
run:

rust

*/

 

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