https://issues.dlang.org/show_bug.cgi?id=16513
--- Comment #2 from uplink.co...@googlemail.com --- Hash collisions will happen! We need a way to speed up those equals compares in rootObject. I'll look if I can find a good way to gradually remove the virtual calls. IsVariable!(Simulated_Object_966) IsMemberVariable!(Simulated_Object_975) isSomeFunction!(Simulated_Object_573) Those SHOULD produce the same hash they work on the same types! I am of the impression that template-inlining can help here. --