Template definition of auxiliary base class for comparison of data structures. More...

#include <JComparable.hh>

Inheritance diagram for JLANG::JComparable< JFirst_t, JSecond_t >:

Friends
bool	operator< (const JFirst_t &first, typename JClass< JSecond_t >::argument_type second)
	Less than operator.

bool	operator< (typename JClass< JSecond_t >::argument_type first, const JFirst_t &second)
	Less than operator.

bool	operator> (const JFirst_t &first, typename JClass< JSecond_t >::argument_type second)
	Greater than operator.

bool	operator> (typename JClass< JSecond_t >::argument_type first, const JFirst_t &second)
	Greater than operator.

bool	operator<= (const JFirst_t &first, typename JClass< JSecond_t >::argument_type second)
	Less than or equal operator.

bool	operator<= (typename JClass< JSecond_t >::argument_type first, const JFirst_t &second)
	Less than or equal operator.

bool	operator>= (const JFirst_t &first, typename JClass< JSecond_t >::argument_type second)
	Greater than or equal operator.

bool	operator>= (typename JClass< JSecond_t >::argument_type first, const JFirst_t &second)
	Greater than or equal operator.

bool	operator== (const JFirst_t &first, typename JClass< JSecond_t >::argument_type second)
	Equal operator.

bool	operator== (typename JClass< JSecond_t >::argument_type first, const JFirst_t &second)
	Equal operator.

bool	operator!= (const JFirst_t &first, typename JClass< JSecond_t >::argument_type second)
	Not equal operator.

bool	operator!= (typename JClass< JSecond_t >::argument_type first, const JFirst_t &second)
	Not equal operator.

Detailed Description

template<class JFirst_t, class JSecond_t>
struct JLANG::JComparable< JFirst_t, JSecond_t >

Template definition of auxiliary base class for comparison of data structures.

Specialisation of class JComparable for two data types.

The various specialisations of this class implement the operators < > <= >= == != .

The first template parameter should have the corresponding member methods:

      bool less(const JSecond_t&) const;
      bool more(const JSecond_t&) const;

where JFirst_t andd JSecond_t refers to the first and second template parameter, respectively. The second template parameter may be a primitive data type. This class uses in-class friend operators (see Barton-Nackman trick).

Definition at line 138 of file JComparable.hh.

Friends And Related Symbol Documentation

◆ operator< [1/2]

template<class JFirst_t , class JSecond_t >

bool operator<	(	const JFirst_t &	first,
		typename JClass< JSecond_t >::argument_type	second )

friend

Less than operator.

Parameters

first	first object
second	second object

Returns: true if first object is less than second object; else false

Definition at line 147 of file JComparable.hh.

    { 
      return first.less(second);
    }

◆ operator< [2/2]

template<class JFirst_t , class JSecond_t >

bool operator<	(	typename JClass< JSecond_t >::argument_type	first,
		const JFirst_t &	second )

friend

Less than operator.

Parameters

first	first object
second	second object

Returns: true if first object is less than second object; else false

Definition at line 161 of file JComparable.hh.

    { 
      return second.more(first);
    }

◆ operator> [1/2]

template<class JFirst_t , class JSecond_t >

bool operator>	(	const JFirst_t &	first,
		typename JClass< JSecond_t >::argument_type	second )

friend

Greater than operator.

Parameters

first	first object
second	second object

Returns: true if first object is greater than second object; else false

Definition at line 175 of file JComparable.hh.

    { 
      return first.more(second);
    }

◆ operator> [2/2]

template<class JFirst_t , class JSecond_t >

bool operator>	(	typename JClass< JSecond_t >::argument_type	first,
		const JFirst_t &	second )

friend

Greater than operator.

Parameters

first	first object
second	second object

Returns: true if first object is greater than second object; else false

Definition at line 189 of file JComparable.hh.

    { 
      return second.less(first);
    }

◆ operator<= [1/2]

template<class JFirst_t , class JSecond_t >

bool operator<=	(	const JFirst_t &	first,
		typename JClass< JSecond_t >::argument_type	second )

friend

Less than or equal operator.

Parameters

first	first object
second	second object

Returns: true if first object is less than or equal to second object; else false

Definition at line 203 of file JComparable.hh.

    { 
      return !first.more(second);
    }

◆ operator<= [2/2]

template<class JFirst_t , class JSecond_t >

bool operator<=	(	typename JClass< JSecond_t >::argument_type	first,
		const JFirst_t &	second )

friend

Less than or equal operator.

Parameters

first	first object
second	second object

Returns: true if first object is less than or equal to second object; else false

Definition at line 217 of file JComparable.hh.

    { 
      return second.more(first);
    }

◆ operator>= [1/2]

template<class JFirst_t , class JSecond_t >

bool operator>=	(	const JFirst_t &	first,
		typename JClass< JSecond_t >::argument_type	second )

friend

Greater than or equal operator.

Parameters

first	first object
second	second object

Returns: true if first object is greater than or equal to second object; else false

Definition at line 231 of file JComparable.hh.

    { 
      return !first.less(second);
    }

◆ operator>= [2/2]

template<class JFirst_t , class JSecond_t >

bool operator>=	(	typename JClass< JSecond_t >::argument_type	first,
		const JFirst_t &	second )

friend

Greater than or equal operator.

Parameters

first	first object
second	second object

Returns: true if first object is greater than or equal to second object; else false

Definition at line 245 of file JComparable.hh.

    { 
      return second.less(first);
    }

◆ operator== [1/2]

template<class JFirst_t , class JSecond_t >

bool operator==	(	const JFirst_t &	first,
		typename JClass< JSecond_t >::argument_type	second )

friend

Equal operator.

Parameters

first	first object
second	second object

Returns: true if two objects are equal; else false

Definition at line 260 of file JComparable.hh.

    { 
      return !first.less(second) && !first.more(second);
    }

◆ operator== [2/2]

template<class JFirst_t , class JSecond_t >

bool operator==	(	typename JClass< JSecond_t >::argument_type	first,
		const JFirst_t &	second )

friend

Equal operator.

Parameters

first	first object
second	second object

Returns: true if two objects are equal; else false

Definition at line 274 of file JComparable.hh.

    { 
      return !second.less(first) && !second.more(first);
    }

◆ operator!= [1/2]

template<class JFirst_t , class JSecond_t >

bool operator!=	(	const JFirst_t &	first,
		typename JClass< JSecond_t >::argument_type	second )

friend

Not equal operator.

Parameters

first	first object
second	second object

Returns: true if two objects are not equal; else false

Definition at line 289 of file JComparable.hh.

    {
      return first.less(second) || first.more(second);
    }

◆ operator!= [2/2]

template<class JFirst_t , class JSecond_t >

bool operator!=	(	typename JClass< JSecond_t >::argument_type	first,
		const JFirst_t &	second )

friend

Not equal operator.

Parameters

first	first object
second	second object

Returns: true if two objects are not equal; else false

Definition at line 303 of file JComparable.hh.

    {
      return second.less(first) || second.more(first);
    }

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

JComparable.hh