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Inline Loops

inline loops are unrolled, and allow some things to happen that only work at compile time. Here we use a for, but a while works similarly.

test "inline for" {
const types = [_]type{ i32, f32, u8, bool };
var sum: usize = 0;
inline for (types) |T| sum += @sizeOf(T);
try expect(sum == 10);
}

Using these for performance reasons is inadvisable unless you've tested that explicitly unrolling is faster; the compiler tends to make better decisions here than you.