Delegates in C++

简介:
Delegates are function pointer containers that are used as a generic form of holding function pointers.
None.gif   template< class T>
None.gif     class ZDelegate
ExpandedBlockStart.gif     {
InBlock.gif    public:
InBlock.gif        List<T> functionList;
InBlock.gif        void operator += (T h)
ExpandedSubBlockStart.gif        {
InBlock.gif            if(!functionList.Contains(h))
InBlock.gif                functionList.AddItem(h); 
ExpandedSubBlockEnd.gif        }

InBlock.gif 
InBlock.gif        void operator -= (T h)
ExpandedSubBlockStart.gif        {
InBlock.gif            if(functionList.Contains(h))
InBlock.gif               functionList.RemoveItem(h); 
ExpandedSubBlockEnd.gif        }

ExpandedBlockEnd.gif    }
;
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