CODEWITHSUNDEEP
vectorrustiteratortraitsrust-itertools
Ecumene
Ecumene

Reputation: 97

How do I interlace two Rust vectors into a new vector?

I need an idiomatic way to interlace these two vectors:

v1 = vec![1.0, 2.0, 3.0];
v2 = vec![4.0, 5.0, 6.0];

The output I expect is:

v3 is [1.0, 4.0, 2.0, 5.0, 3.0, 6.0];

I attempted using itertool's interlace function, but I can't get the iterators to collect to Vec types. It's likely I'm using them wrong.

Upvotes: 2

Views: 812

Answers (1)

edwardw
edwardw

Reputation: 14002

Using interleave() function or interleave() method from Itertools crate:

use itertools::{interleave, Itertools};

fn main() {
    let v1 = vec![1.0, 2.0, 3.0];
    let v2 = vec![4.0, 5.0, 6.0];
    let v = interleave(v1, v2).collect::<Vec<_>>();
    dbg!(v);

    let v1 = vec![1.0, 2.0, 3.0];
    let v2 = vec![4.0, 5.0, 6.0];
    let v = v1
        .into_iter()
        .interleave(v2.into_iter())
        .collect::<Vec<_>>();
    dbg!(v);
}

Upvotes: 7

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