qip::Comparison< T, U >

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template<typename T, typename U = T>
class qip::Comparison< T, U >

Helper template that provides !=, >, <=, >= given == and <.

Derive publicly from this (with T = your class) and implement == and <; the remaining comparison operators are provided automatically.

class C : public qip::Comparison<C> {
  friend bool operator==(const C &lhs, const C &rhs);
  friend bool operator<(const C &lhs, const C &rhs);
};

For mixed-type comparisons, inherit multiple specialisations:

class D : public qip::Comparison<D>,
                 qip::Comparison<D,C>,
                 qip::Comparison<C,D> {
  friend bool operator==(const D &lhs, const D &rhs);
  friend bool operator<(const D &lhs, const D &rhs);
  friend bool operator==(const D &lhs, const C &rhs);
  friend bool operator<(const D &lhs, const C &rhs);
  friend bool operator==(const C &lhs, const D &rhs);
  friend bool operator<(const C &lhs, const D &rhs);
};

#include <Template.hpp>

Friends
bool	operator!= (const T &lhs, const U &rhs)
bool	operator> (const T &lhs, const U &rhs)
bool	operator<= (const T &lhs, const U &rhs)
bool	operator>= (const T &lhs, const U &rhs)

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The documentation for this class was generated from the following file:

• qip/Template.hpp