Which C++ signals/slots library should I choose?

Question

I want to use a signals/slots library in a project that doesn\'t use QT. I have pretty basic requirements:

1. Connect two functions with any number of parameters

Answer 1

The two you listed are the only two worth while that I'm aware of. Everything that I have seen has shown libsigc++ coming out on top performance wise. As you saw in the comparison, there are some instances where boost's syntax is a little prettier, but just a bit.

I've personally used libsigc++ and am happy with it. Libsigc++ seems to be used by vastly more projects. A quick look in my package manager lists more than 100 projects dependant on libsigc++2. That alone is enough in my opinion to tilt the balance especially considering the performance advantage and the lack of other significant differences.

I say libsigc++2.