default value

[Sergey Shandar <sergey.junk@…>]

struct default_
{
  template<class T>
  operator T() const
  {
    return T();
  }
};

Useful when you don't want to care about type of unimportant arguments. For example

void SomeFunction(Type1, Type2, Type3);
...
SomeFunction(default_(), default_(), default_());

[John Maddock]

Ideas like this that don't belong to any existing library are best discussed on the main developer mailing list: I'm closing the ticket down for now.

[Sergey Shandar <sergey.junk@…>]

Replying to johnmaddock:

Ideas like this that don't belong to any existing library are best discussed on the main developer mailing list: I'm closing the ticket down for now.

Agree, now it is in the mailing list ​http://thread.gmane.org/gmane.comp.lib.boost.devel/167706 as a part of cast library.