NULL_v Struct Reference
[Utility Library]

#include <stlsoft/util/null.hpp>

List of all members.

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Detailed Description

Represents a type that can be an active replacement for NULL.

This class can act as a replacement for the NULL macro, by being validly assigned to or equated with pointer types only, as in

int i = NULL; // error int *p = NULL; // OK

if(i == NULL) {} // error if(NULL == i) {} // error

if(p == NULL) {} // OK if(NULL == p) {} // OK

When used via inclusion of the file stlsoft_nulldef.h, the macro NULL is redefined as NULL_v(), such that expressions containing NULL will be valid against pointers only.

Public Member Functions
	NULL_v ()
	Default constructor.
template<typename T>
	operator T * () const
	Implicit conversion operator (convertible to any pointer type).
template<typename T2, typename C>
	operator T2 C::* () const
	Implicit conversion operator (convertible to any pointer type).
template<typename T>
bool	equal (T const &rhs) const
	Evaluates whether an instance of a type is null.
template<typename T>
bool	equals (T const &rhs) const
Static Public Member Functions
static NULL_v	create ()
	Static creation.

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Constructor & Destructor Documentation

NULL_v

(

)

[inline]

Default constructor.

Referenced by NULL_v::create().

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Member Function Documentation

operator T *

(

)

const [inline]

Implicit conversion operator (convertible to any pointer type).

operator T2 C::*

(

)

const [inline]

Implicit conversion operator (convertible to any pointer type).

bool equal

(

T const &

rhs

)

const [inline]

Evaluates whether an instance of a type is null.

Parameters:

rhs

A reference arbitrary type which will be compared to null

bool equals

(

T const &

rhs

)

const [inline]

Deprecated:

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

• stlsoft/util/null.hpp