lin/1 basic.md

Last active July 3, 2017 15:41

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iOS

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1, add a new project from add new

2, add podfile on the root folder

3, pod install

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1, ?? in swift is as same as || in ruby.

2, "" is equivalent to String(), [Int](), var namesOfIntegers = [Int: String]()

3, Structures and Enumerations Are Value Types, and Classes Are Reference Types

4, count(string)

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