Question

How to get the difference between two vectors in Rust

Answer 1

fn main() {
    let array1 = vec!["c#", "c", "c++", "java", "python", "vb"];
    let array2 = vec!["rust", "c", "c++", "go", "python", "nodejs"];

    let set1: std::collections::HashSet<_> = array1.into_iter().collect();
    let result: Vec<_> = array2.into_iter()
                               .filter(|item| !set1.contains(item))
                               .collect();

    println!("{}", result.join(" "));
}

 
    
/*
run:
 
rust go nodejs
   
*/

 

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