Example Program
Allocators
Examples for memory allocation.
File "allocator.cpp"
A tutorial about the use of allocators.
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We define an arbitrary class.
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We create 100 instances of MyClass  on the heap 
using a default temporary allocator object Default .
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Before the storage is deallocated, the MyClass  objects have to be destroyed.
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We can use any kind of object as an allocator.
However, dedicated allocators offer more advanced functionality, e.g. clear.
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clear can be used to deallocate all storage at once.	
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