Saver< SavedType > Class Template Reference

Saves a variable reference at construction time to restore/set its value at destruction time. More...

#include "keyvalue/util/NullDeleter.h"

List of all members.

Public Member Functions
	Saver (SavedType &data)
	Constructs a Saver for a variable.
	Saver (SavedType &data, const SavedType &onExit)
	Constructs a Saver for a variable and sets the value it will get at time the of Saver's destruction.
SavedType	getSaved () const
	Gets saved value.
Private Attributes
SavedType &	data_
SavedType	onExit_

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Detailed Description

template<typename SavedType>
class keyvalue::util::Saver< SavedType >

Saves a variable reference at construction time to restore/set its value at destruction time.

This class applies Stroustrup's RAII technique to reset a (probably, static) variable when Saver go out of scope. The variable can be reset to the value it had when Saver was constructed or set to another given value.

Parameters:

SavedType

: (template parameter) The type of saved value.

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Constructor & Destructor Documentation

Saver

(

SavedType &

data

)

[inline, explicit]

Constructs a Saver for a variable.

Parameters:

data

: the variable to be saved.

Saver	(	SavedType &	data,
		const SavedType &	onExit
	)			[inline]

Constructs a Saver for a variable and sets the value it will get at time the of Saver's destruction.

Parameters:

	data	: the variable to be saved.
	onExit	: the value that data is set to when Saver is destroyed.

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Member Function Documentation

SavedType getSaved

(

)

const [inline]

Gets saved value.

Returns:

The value.