Unordered Map Boost

You probably want GetMessageFunctorHashMap() to return a reference not a value.

You were right! Thanks!

Now the code crashes in the string library when internally the Unordered_Map container tries to compare two strings. Anyone knows if unordered_map can compare and hash strings by default? Or i have to define the hash function and the compare function?

Thanks!

boost::unordered_map should work out of the box with std::string objects as keys.

Quote:

GetMessageFunctorHashMap()["Hello"]=(Functor*) new SpecificVoidFunctor(this, &MessageSystem::Exit);

1) That is obviously not exception-safe, but since your map is global, you probably don't care about leaks there.

2) Casts are pure evil, and C-style casts even more. The funny thing is that you DON'T need to cast, here. So why are you?

3) Why not use generic binding facilities instead of that hard-coded SpecificVoidFunctor thingy? Sure, generic binding returns functors of unspecified types, but you can use type erasure, which should be
a) fully compatible with any functor
b) more efficient
c) more optimal in terms of memory usage
d) exception-safe

Thanks everybody!

Finally I used a simple std::map, works OK and it's fine for the first version of my system. But I still don't known why the unordered_map and the hash_map containers don't works....Well....that remain a mystery xD.

loufoque:

1) Ok, I'll take in to account.
2) Yes, your right i don't know why i was using a cast there.
3) "generic binding facilities". Can you explain me more about that, please? I don't known what are you referring to.