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extern mod std;
trait methods {
fn to_bytes() -> ~[u8];
}
impl (): methods {
fn to_bytes() -> ~[u8] {
vec::from_elem(0, 0)
}
}
// the position of this function is significant! - if it comes before methods
// then it works, if it comes after it then it doesnt!
fn to_bools(bitv: {storage: ~[u64]}) -> ~[bool] {
vec::from_fn(8, |i| {
let w = i / 64;
let b = i % 64;
let x = 1u64 & (bitv.storage[w] >> b);
x == 1u64
})
}
fn main() {
let bools = ~[false, false, true, false, false, true, true, false];
let bools2 = to_bools({storage: ~[0b01100100]});
for uint::range(0, 8) |i| {
io::println(#fmt("%u => %u vs %u", i, bools[i] as uint, bools2[i] as uint));
}
assert bools == bools2;
}
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