Whether rust provide such syntactic salt : array compare to one element?

I study the std::ops::Add, and etc, and I wanna know whether rust have such syntactic salt which mention as below,

I check the std::cmp::PartialEq, PartialOrd, not support different types comparison,
anything else can make it as below as expectation?

fn main() {
    let a = [1,2,3,4,5];
    println!("{:?}", a>3);    //expect the result: [false, false,false, true, true]
}

No, Rust does not provide this kind of thing.

However, when you have an array, you can use array::map like this:

fn main() {
    let a = [1,2,3,4,5];
    println!("{:?}", a.map(|val| val > 3));
}

If it's a vector rather than an array, you would go through iterators:

fn main() {
    let a = vec![1,2,3,4,5];
    println!("{:?}", a.into_iter().map(|val| val > 3).collect::<Vec<_>>());
}
4 Likes

thanks for your help,,

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