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4. 处理地图的问题。
原标题:Compiling problems dealing map.find and initialization

I ve written a class in c++ named Sync . Then, i ve created a map holding Sync objects, associated with syncID num, as follows:

map<int, Sync*> _syncList;

在我的一种方法中,我试图在我的地图上找到一个现有的合成物体,具体如下:

Sync* currS = *(_syncList.find(sync_id))->second;

我认为这是错误的,但汇编者对此表示不满:

error: cannot convert ‘Sync’ to ‘Sync*’ in initialization

为了适当解决这一问题,可以做些什么?

最佳回答

两点:

  1. Get rid of the asterisk: Sync* currS = _syncList.find(sync_id)->second;
  2. Be sure that find() actually finds an element (or else you need to check the return value of find() for map<...>::end).
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