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https://developer.apple.com/library/ios/referencelibrary/GettingStarted/DevelopiOSAppsSwift/Lesson6.html#//apple_ref/doc/uid/TP40015214-CH20-SW1 测试你的data
Apple Developer swift教程学习笔记
原文地址：http://www.cnblogs.com/shycie/p/5487070.html
