On Thursday, 5 March 2015 at 23:50:28 UTC, Jesse Phillips wrote:
I think I read somewhere you don't want to use unions like this, but I think it is more because you generally don't want to reinterpret bits.
It is non-portable, since some hardware architectures may use different representations (e.g. different byte order on int and float).
D claims to follow C, so using unions for type punning is ultimately implementation defined.
In C++ using unions for type punning is illegal/undefined behaviour, so in C++ you should use memcpy. Memcpy also has the advantage of explicitly copying thus avoiding some aliasing issues.
