On 9 April 2013 01:07, Jacob Carlborg <d...@me.com> wrote: > On 2013-04-08 14:52, Iain Buclaw wrote: > >> On 8 April 2013 13:25, Jacob Carlborg <d...@me.com <mailto:d...@me.com>> >> >> wrote: >> >> On 2013-04-08 10:29, Iain Buclaw wrote: >> >> This information could possibly be helpful. Though given that >> most of >> (gdc) codegen is on par with g++, there's probably not much on >> the list >> that isn't already detected by the backend optimisation passes. >> >> >> Multiple calls to pure functions could be cached. >> >> -- >> /Jacob Carlborg >> >> >> Not always, but in some circumstances, yes. >> >> --- >> struct Foo >> { >> int a = 0; >> pure int bar (immutable int x) >> { >> ++a; >> return x * 2; >> } >> } >> >> >> void main() >> { >> Foo f; >> int i = f.bar(2) + f.bar(2); >> >> assert (i == 8); >> assert (f.a == 2); >> } >> > > I though that wasn't possible. What's the point of pure if that's possible?
Precisely >_<
