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//@ run-pass
#![allow(non_camel_case_types)]
trait methods { //~ WARN trait `methods` is never used
fn to_bytes(&self) -> Vec<u8>;
}
impl methods for () {
fn to_bytes(&self) -> Vec<u8> {
Vec::new()
}
}
// the position of this function is significant! - if it comes before methods
// then it works, if it comes after it then it doesn't!
fn to_bools(bitv: Storage) -> Vec<bool> {
(0..8).map(|i| {
let w = i / 64;
let b = i % 64;
let x = 1 & (bitv.storage[w] >> b);
x == 1
}).collect()
}
struct Storage { storage: Vec<u64> }
pub fn main() {
let bools = vec![false, false, true, false, false, true, true, false];
let bools2 = to_bools(Storage{storage: vec![0b01100100]});
for i in 0..8 {
println!("{} => {} vs {}", i, bools[i], bools2[i]);
}
assert_eq!(bools, bools2);
}
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