Re: Templates functions as template parameters

From:

"Victor Bazarov" <v.Abazarov@comAcast.net>

Newsgroups:

comp.lang.c++

Date:

Mon, 25 Feb 2008 17:39:38 -0500

Message-ID:

<fpvg3b$u5j$1@news.datemas.de>

tygro wrote:

Thank you for the quick response.

Victor Bazarov wrote:

A function is a functor. No big deal.

So maybe I'm doing something bad. Can you explain this:
template <typename T>
class testFunctor
{
public:
void operator()() {}
};

template <typename T> void purFunction() {}

template <template<typename> class Fun>

^^^^^
Here's your "culprit". You said you'll be passing a template
of a class (i.e. a class template). A function template is
not a class template.

void dummy()
{
  Fun<int>();
}

int main()
{
  dummy<testFunctor>();
  dummy<purFunction>();

  return 0
}

dummy<purFunction>() won't compile.

You need to look at the 'std::tr1::function'. I am not sure how to
use it, but I bet you that's where you'll find what you're looking for.

[..]

V
--
Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask