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templates with same name but diffrent params

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hi how can i use Templates with same name but different argument params? like as:
template <class T1>
class functor
{
.....
};

template <class T1,class T2>
class functor
{
........
}; 

and use them:
functor<void> = func1;
functor<void,int> = func2;

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You can specify default values for template parameters, just like with functions. You can then use partial template specialization to treat templates with the default value specially, if you like.

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Also, in the specific case that you see to be describing, you can always just use std::tr1::function or boost::function

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