fn main() {

let mut fixed: [i32; 4] = [1, 2, 3, 4];
let zeros: [f64; 8] = [0.0; 8];
let frozen: Box<[i64]> = vec![7, 8, 9].into_boxed_slice();
let mut grow: Vec<i64> = Vec::new();
for i in 0..5 { grow.push(i * i); }
let mut stack: Vec<i64> = Vec::new();
stack.push(1); stack.push(2); stack.push(3);
let top = stack.pop().unwrap();
stack.truncate(stack.len() - 2);
let mut small = [0_u8; 8];
let mut small_len = 0;
for &byte in b"hi" { small[small_len] = byte; small_len += 1; }

assert_eq!(fixed,[1,2,3,4]);fixed[0]=9;assert_eq!(zeros,[0.0;8]);assert_eq!(&*frozen,&[7,8,9]);assert_eq!(grow,[0,1,4,9,16]);assert_eq!(top,3);assert!(stack.is_empty());assert_eq!(&small[..small_len],b"hi");
}