1pub fn main() void {
 2    var i: u32 = 10;
 3    var j: u32 = 11;
 4    assert(i & 1 == 0);
 5    assert(j & 1 == 1);
 6    var m1: u32 = 0b1111;
 7    var m2: u32 = 0b0000;
 8    assert(m1 & 0b1010 == 0b1010);
 9    assert(m2 & 0b1010 == 0b0000);
10    _ = .{ &i, &j, &m1, &m2 };
11}
12fn assert(b: bool) void {
13    if (!b) unreachable;
14}
15
16// run
17//