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Undefined symbols for architecture x86_64: "protocol witness table for __ObjC.NSNotification.Name : Swift.Hashable in Foundation", referenced from: xcode8Beta测试.ViewController.touchesBegan (Sw
这种错误只需要注意String 类型和NSnotification.Name类型的不同就行了。举个例子:
吧这个地方的字符串转化为String就行了
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原文地址:http://www.cnblogs.com/Brisy/p/5825164.html