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C++: Difference between revisions
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Resource Acquisition Is Initialization - binds the life cycle of a resource to the lifetime of an object.<br> | Resource Acquisition Is Initialization - binds the life cycle of a resource to the lifetime of an object.<br> | ||
For instance, the resource for a vector is an allocated amount of memory. Once the vector is destroyed (destructor called), the resource is released.<br> | For instance, the resource for a vector is an allocated amount of memory. Once the vector is destroyed (destructor called), the resource is released.<br> | ||
In general, each RAII object should have all of the following: | |||
* Constructor acquiring resources | |||
* Copy Constructor | |||
* Assignment operator | |||
* Destructor releasing resources | |||
* Swap function | |||
* Move constructor (since C++11) | |||
{{hidden | Example RAII Class | | |||
Stolen from [https://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom stack overflow] | Stolen from [https://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom stack overflow] | ||
<syntaxhighlight lang="cpp"> | <syntaxhighlight lang="cpp"> | ||
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}; | }; | ||
</syntaxhighlight> | </syntaxhighlight> | ||
}} | |||
==Useful Libraries== | ==Useful Libraries== | ||