swift-Learning Tool-playground

There are a few tips to learn about swift and share with you today

We write swift programs are generally used in XCDE, just choose the development language not

But the swift program tip in XCDE is too slag.

Today we recommend a learning method---swift learning tool

Playground-This can be found in the new project

Look at its powerful features.

This is basic Swift's use of some simple syntax

Playground-noun:a place where people can playimport cocoavar str = "Hello, Playground" var i = 10func supersqrt (x:int )->int{    var sum = 0 for    var i = 1;i < x;i++    {         sum + = i    }        return Sum}supersqrt ("Hell o ") var number = 10var Array = [String] (), var dict = [int:string] (); array.countarray = [" 1 "," 2 "," 3 "," 4 "," 5 "," 6 "]

Keep looking!

We can get the results straight out of the system without printing.

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swift-Learning Tool-playground