Description
It’s possible to convert vectors into arrays of a given length.
Syntax
use std::convert::TryInto;
let v1: Vec<u32> = vec![1, 2, 3];
// This will succeed; our vector has a length of three, we're trying to
// make an array of length three.
let a1: [u32; 3] = v1.try_into().expect("wrong length");
// But if we try to do it with a vector of length five...
let v2: Vec<u32> = vec![1, 2, 3, 4, 5];
// ... this will panic, since we have the wrong length.
let a2: [u32; 3] = v2.try_into().expect("wrong length");