On 1 September 2012 19:08, Dmitry Olshansky <dmitry.o...@gmail.com> wrote:
> On 01-Sep-12 19:58, Peter Alexander wrote: > >> C: >> >> int mul(int x, int y); >> >> >> Future D: >> >> pure @safe nothrow nogc commutative associative distributive >> @forceinline mayoverflow int mul(int x, int y); >> >> > No it's GNU C++ of today just replace 'pure' with __attribute__((pure)) > and you are done :) > And don't even get me started at MS extensions... > > Either way this is a kind of thing that only some users need but std > library have to use all of them just so that those 'some users' can use it. > > In fact if pure @safe nothrow could be combined in a user defined tag: > > alias pure @safe nothrow nogc nice_func; > > nice_func int mul(int x, int y); > > and even C has it via macros, damn... Aside the context of this thread, this would actually be REALLY useful. I think I've asked about it a few times before. There is already a fairly annoying problem where GDC supports GNU attributes that DMD doesn't know about, which are basically impossible to use; there's no nice way to use compiler-specific attributes without some sort of alias like this. I think the only current way is to duplicate the definitions in different version blocks. An attribute alias would be super handy, particularly when abstracting support for multiple compilers.
