#![allow(unused_variables)]
extern crate stackvec; use ::stackvec::prelude::*;
fn main ()
{
let vecs_array = [
vec![1, 2, 3, 4],
vec![],
vec![5, 6],
];
let flattened: Vec<u8> = vecs_array
.into_iter()
.flatten()
.collect()
;
assert_eq!(flattened, vec![1, 2, 3, 4, 5, 6]);
}