19.CPP-MODULE-07

• Templates
• Templates de classe
• Default type && operator overload
• Specialization
• Parametric macros

Templates

Self-explanatory see the example

template<typename T> const T &min(T const &x, T const &y)
{
	return (x < y ? x : y);
}

min(2,3)           				// return 3		Implicit instanciation
max<std::string>("str1","str2")			// return str2		Explicit instanciation

Templates de classe

template<typename T> class randomClasse
{
	randomClasse<T>(void);
	~randomClasse<T>(void);
	...
}

Default type && operator overload

template<typename T = int> class randomClasse	// default type is integer	
{...}

template<typename T> ostream & operator<<(...)	// operator overloads have to be templates as well

Specialization

Variante d'un template qui peut être partielle ou complète

template<typename T, typename U> class randomClass	
{...}

template<typename U>				// Partial
class randomClass<int, U> {...}

template<>
class randomClass<bool, bool> {...}		// Full

Parametric macros

kind of templates in c Pas ouf, limites vite atteintes

#define max(x,y) (((x)==(y)) > (x) : (y))