On Tuesday, 28 July 2020 at 09:28:27 UTC, wjoe wrote: > It was run on the doc page. I suppose the examples are wrapped > in a unittest block? Indeed, see https://github.com/dlang/phobos/blob/cd2ba0d2c378a893ec0eaefc57b87d0770a1990c/std/bitmanip.d#L293-L314