原档:https://developer.apple.com/library/prerelease/ios/documentation/Swift/Conceptual/Swift_Programming_Language/Generics.html#//apple_ref/doc/uid/TP40014097-CH26-ID179 参考:http://wiki.jikexueyuan.com/project/swift/chapter2/23_Generics.html 1.泛型 泛型代码可以…