Templates

[Trauts]

I can't remember how to do this...

Say you have an operator overload that usually looks like this:

template <typename UnknownType>
any operator <<(const any & lhs, const UnknownType & rhs)

but you want a explicit (I think thats the right word :-)) version of it like this that does something different:

istream& operator <<(ostream & is, any & operand)

How do you do this when you know for sure you want an ostream?

I thought it would be

template <ostream>
ostream& operator <<(ostream & os, const any & operand)

However, it really isn't liking this, as now there are three << overloads:

template <ostream>
	ostream& operator <<(ostream & os, const any & operand)

	template <typename UnknownType>
	any operator <<(const any & lhs, const UnknownType & rhs)

	template <typename UnknownType>
	UnknownType operator <<(const UnknownType & lhs,const any & rhs)

How do I get it to run a different overload if parameter one is an ostream and parameter two is an any?

I also need it to be able to have parameter one be UnknownType and parameter two be any... the reverse.

[Noobie]

No idea.

[kuphryn]

Which function template generates errors?

template <>
ostream& operator <<(ostream & os, const any & operand)

Kuphryn

[Trauts]

I think the problem is the constructor for the any takes any type... hence the name.

I'll see if making it explicit fixes it, if so, we know what to do.