ts::Variable< T > Class Template Reference

A template class which defines a variable which can be either initialized or uninitialized. More...

Public Member Functions
	Variable () noexcept
	Default constructor, the variable is uninitialized.
	Variable (const T &obj)
	Constructor from a T instance, the variable is initialized. More...
	Variable (const Variable< T > &other)
	Copy constructor. More...
	Variable (Variable< T > &&other)
	Move constructor. More...
virtual	~Variable ()
	Virtual destructor.
void	clear ()
	Clear the value. More...
bool	identical (const Variable< T > &other) const
	Identity. More...
bool	operator!= (const T &obj) const
	Unequality operator with a T instance. More...
bool	operator!= (const Variable< T > &other) const
	Unequality operator. More...
Variable< T > &	operator= (const T &obj)
	Assignment operator from a T object. More...
Variable< T > &	operator= (const Variable< T > &other)
	Assignment operator. More...
Variable< T > &	operator= (Variable< T > &&other)
	Move assignment operator. More...
bool	operator== (const T &obj) const
	Equality operator with a T instance. More...
bool	operator== (const Variable< T > &other) const
	Equality operator. More...
bool	set () const
	Check the presence of a value. More...
bool	setDefault (const T &def)
	Set a value if the variable is currently unset. More...
T &	value ()
	Access the T value inside the variable. More...
const T &	value () const
	Access the constant T value inside the variable. More...
T	value (const T &def) const
	Get a copy of the T value inside the variable or a default value. More...

Detailed Description

template<typename T>
class ts::Variable< T >

A template class which defines a variable which can be either initialized or uninitialized.

Template Parameters

T	A type or class which describes the content of the variable. The basic requirement on T is the availability of a copy constructor and operators for assignment and equality.

Constructor & Destructor Documentation

Variable() [1/3]

template<typename T >

ts::Variable< T >::Variable

(

const Variable< T > &

other

)

Copy constructor.

This object is in the same state as other. If other is initialized, this object becomes initialized with the same T value.

Parameters

[in]

other

Another instance from which to build this object.

Variable() [2/3]

template<typename T >

ts::Variable< T >::Variable

(

Variable< T > &&

other

)

Move constructor.

Parameters

[in,out]

other

Another instance from which to build this object.

Variable() [3/3]

template<typename T >

ts::Variable< T >::Variable ( const T &  obj )

inline

Constructor from a T instance, the variable is initialized.

Parameters

[in]

obj

The initial value for the variable.

Member Function Documentation

operator=() [1/3]

template<typename T >

Variable<T>& ts::Variable< T >::operator=

(

const Variable< T > &

other

)

Assignment operator.

This object is in the same state as other. If other is initialized, this object becomes initialized with the same T value.

Parameters

[in]

other

Another instance from which to assign this object.

Returns

A reference to this object.

operator=() [2/3]

template<typename T >

Variable<T>& ts::Variable< T >::operator=

(

Variable< T > &&

other

)

Move assignment operator.

Parameters

[in,out]

other

Another instance from which to assign this object.

Returns

A reference to this object.

operator=() [3/3]

template<typename T >

Variable<T>& ts::Variable< T >::operator=

(

const T &

obj

)

Assignment operator from a T object.

This object becomes initialized if it was not already.

Parameters

[in]

obj

Value from which to assign this object.

Returns

A reference to this object.

set()

template<typename T >

bool ts::Variable< T >::set ( ) const

inline

Check the presence of a value.

Returns

True if the variable is initialized, false otherwise.

setDefault()

template<typename T >

bool ts::Variable< T >::setDefault

(

const T &

def

)

Set a value if the variable is currently unset.

Do nothing if the variable is already initialized.

Parameters

[in]

def

A default T value if the variable is uninitialized.

Returns

True if the variable was not initialized and the default value was set, false if the variable was already initialized.

clear()

template<typename T >

void ts::Variable< T >::clear

(

)

Clear the value.

This object becomes uninitialized if it was not already.

value() [1/3]

template<typename T >

const T& ts::Variable< T >::value

(

)

const

Access the constant T value inside the variable.

Returns

A constant reference to the T value inside the variable.

Exceptions

UninitializedVariable

If the variable is uninitialized.

value() [2/3]

template<typename T >

T& ts::Variable< T >::value

(

)

Access the T value inside the variable.

Returns

A reference to the T value inside the variable.

Exceptions

UninitializedVariable

If the variable is uninitialized.

value() [3/3]

template<typename T >

T ts::Variable< T >::value

(

const T &

def

)

const

Get a copy of the T value inside the variable or a default value.

Parameters

[in]

def

A default T value if the variable is uninitialized.

Returns

A copy the T value inside the variable if the variable is initialized, def otherwise.

operator==() [1/2]

template<typename T >

bool ts::Variable< T >::operator==

(

const Variable< T > &

other

)

const

Equality operator.

Parameters

[in]

other

An other instance to compare with.

Returns

True if both instances are initialized and contain equal values.

operator!=() [1/2]

template<typename T >

bool ts::Variable< T >::operator!=

(

const Variable< T > &

other

)

const

Unequality operator.

Parameters

[in]

other

An other instance to compare with.

Returns

True if any instance is uninitialized or both are initialized with unequal values.

operator==() [2/2]

template<typename T >

bool ts::Variable< T >::operator==

(

const T &

obj

)

const

Equality operator with a T instance.

Parameters

[in]

obj

An object to compare with.

Returns

True if this object is initialized and its value is equal to obj.

operator!=() [2/2]

template<typename T >

bool ts::Variable< T >::operator!=

(

const T &

obj

)

const

Unequality operator with a T instance.

Parameters

[in]

obj

An object to compare with.

Returns

True if this object is uninitialized or its value is not equal to obj.

identical()

template<typename T >

bool ts::Variable< T >::identical

(

const Variable< T > &

other

)

const

Identity.

Parameters

[in]

other

An other instance to compare with.

Returns

True if both instances are initialized and contain equal values or if both instance and not initialized.

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

• tsVariable.h