__if_exists keyword in microsoft c++
__if_exists allows you to check a class have member or not. __if_exists用于检查类中是否存在某成员
__if_exists(class::member)
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windows
日期: 2016-04-22 17:30:06, 8 years and 268 days ago
__if_exists allows you to check a class have member or not. __if_exists用于检查类中是否存在某成员
__if_exists(class::member)