Saves a variable reference at construction time to restore/set its value at destruction time.
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List of all members.
Public Member Functions |
| | Saver (SavedType &data) |
| | Constructs a Saver for a variable.
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| | 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.
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| SavedType | getSaved () const |
| | Gets saved value.
|
Private Attributes |
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SavedType & | data_ |
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SavedType | onExit_ |
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. |
Constructor & Destructor Documentation
| Saver |
( |
SavedType & |
data |
) |
[explicit] |
Constructs a Saver for a variable.
- Parameters:
-
| data | : the variable to be saved. |
| 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.
- Parameters:
-
| data | : the variable to be saved. |
| onExit | : the value that data is set to when Saver is destroyed. |
Member Function Documentation
| SavedType getSaved |
( |
|
) |
const |
Gets saved value.
- Returns:
- The value.
