C++ function signature hint in Emacs?

Question

Can we let emacs display the function signatures and overloading candidates when typing a function name and the parameter list? This will be very helpful.

Answer 1

This can be done with CEDET (built in) together with function-args:

Some features:

1. fa-show shows function arguments inline, allowing to switch between overloads.
2. fa-jump jumps to an overloaded candidate (when there are many).
3. moo-complete gives better completion sometimes, and uses helm which is an advantage for speed.
4. moo-propose-virtual uses helm to instantly fill in a virtual function signature in an overloaded class.
5. moo-propose-override does so for any parent function (not just virtual).