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IEnumerator
IEnumerable
yield
HOWARD 20130606
IEnumerator

IEnumerable


yield

Implement IEnumerable

 http://columns.chicken-house.net/post/C-yield-return-1-How-It-
Work-.aspx
 http://msdn.microsoft.com/en-us/library/9k7k7cf0(v=vs.80).aspx
 http://msdn.microsoft.com/zh-tw/library/h1x9x1b1.aspx
 http://msdn.microsoft.com/zh-
tw/library/system.collections.ienumerator.aspx

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