template<class T> class SmartPtr

reference counted objects implementation used to handle instances in containers (like vectors) motivated by Mumit's STL Newbie guide inspired by David Harvey

Public Fields

bool res

Public Methods

SmartPtr(void)

Default constructor

SmartPtr(T* ptr)

Constructor based on a pointer to the desired object After this call, the pointer is under control !

~SmartPtr(void)

Destructor : free a reference of the counted object If the references counter == 0, free the object

SmartPtr(SmartPtr<T> const & ref)

Copy-constructor : get a new reference to the counted object

SmartPtr<T> & operator=(SmartPtr<T> const &ref)

Assignment operator : release the current counted object and get a new reference to the counted object

T* operator->()

Dereferencement operator : provide consistent use of counted objects obj->member_of_class_T even if obj is in fact SmartPtr<T> obj;

T const* operator->() const

Const dereferencement operator

T* getPtr(void) const

Returns the pointer, without any control

return(lhs==rhs)

bool Null(void) const

true if the SmartPtr object does not reference any pointer

void setNull(void)

frees the referenced pointer

Documentation

reference counted objects implementation used to handle instances in containers (like vectors) motivated by Mumit's STL Newbie guide inspired by David Harvey

SmartPtr(void)

Default constructor

SmartPtr(T* ptr)

Constructor based on a pointer to the desired object After this call, the pointer is under control !

~SmartPtr(void)

Destructor : free a reference of the counted object If the references counter == 0, free the object

SmartPtr(SmartPtr<T> const & ref)

Copy-constructor : get a new reference to the counted object

SmartPtr<T> & operator=(SmartPtr<T> const &ref)

Assignment operator : release the current counted object and get a new reference to the counted object

T* operator->()

Dereferencement operator : provide consistent use of counted objects obj->member_of_class_T even if obj is in fact SmartPtr<T> obj;

T const* operator->() const

Const dereferencement operator

T* getPtr(void) const

Returns the pointer, without any control Returns the pointer, without any control. Warning : the following sequence may lead to segfault ! AClass * my_new_ptr = new AClass(); SmartPtr<AClass> reference_counted_object = new SmartPtr<my_new_ptr>;  ... AClass * my_ptr = reference_counted_object.getPtr(); delete my_ptr;  freeing memory of a counted pointer ! ARGHHHH ! reference_counted_object->member();  SEGFAULT :(

bool res

return(lhs==rhs)

bool Null(void) const

true if the SmartPtr object does not reference any pointer

void setNull(void)

frees the referenced pointer

This class has no child classes.

Friends:

bool operator==(SmartPtr<T> const & lhs, SmartPtr<T> const & rhs)
bool operator==(SmartPtr<T> const & lhs, std::string const & r_id)
bool operator==(SmartPtr<T> const & lhs, int value)
bool operator!=(SmartPtr<T> const & lhs, SmartPtr<T> const & rhs)

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