Package unsafe … The functions Alignof and Sizeof take an expression x of any type and return the alignment or size, respectively, of a hypothetical variable v as if v was declared via var v = x. Grammar nit! That should be “…as if v were…” But nobody cares about that. While Alignof is unlikely to be used outside of CGO, or low-level optimizations, Sizeof can be useful for us mere mortals.
