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Tip of the Day
Language: C++
Expertise: Intermediate
Jun 14, 2004

Customize Your Template Function

If a function instantiated from a generic template definition does not suit your need, it's possible to provide a specialized definition for that function template instantiation. Take a look at this:

	template <class type>
	type min (type t1, type t2)
	{
	  return (t1<t2 ? t1 : t2);
	}
Say you need to compare two literal strings. The function instantiated from the generic template definitions won't work for you. In this case, you can provide the specialized definition of the function template instantiation which otherwise would be generated from generic template definition. Like this:
	

	template<>const char*min (const char* t1, const char* t2)
	{
	    return (strcmp (t1, t2) < 0 ? t1 : t2) ; 		
	}

Saurabh Ramya
 
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