Frédéric Bron wrote:
This does not check for return type but just ignores it with the operator, trick. In the end, you do not know if fun(a,b) return void or not. I find your lack of faith disturbing.
I am very sorry for that, I did not want to hurt you; I was too rude.
Oh, no worries! You missed the Star Wars reference. I was making a joke, not actually upset. :-)
This just shows how far I am from your practice of C++ because the fact that I understood the operator, trick did not make me think of how to use it to perform what I wanted. I have now read carrefully your proposed code and it works! I am now able ot make the has_operator_xxxx traits work for any return type. So thank you very much and many kudos for your kind help.
Excellent. Glad to be of service. -- Eric Niebler BoostPro Computing http://www.boostpro.com