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Swift 2

斯威夫特2

To create an array of Ints in sequence you can use a "range":

要按顺序创建Ints数组，可以使用“range”:

let a = Array(0...10)  // [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

Here 0...10 makes the Range and the Array initializer makes the Range into an Array of Ints.

这里0…10使范围和数组初始化器使范围成为一个Ints数组。

There's also this variant:

还有这个变体:

let a = Array(0..<10)  // [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

And to do the same thing but with a different stepping, you can use "stride":

要做同样的事情，但是用不同的步伐，你可以使用"stride":

let b = Array(0.stride(through: 10, by: 2))  // [0, 2, 4, 6, 8, 10]

Here stride starts on 0 and goes through 10 by steps of 2.

这里大步从0开始，走10步，走2步。

It also has a variant:

它还有一个变体:

let b = Array(0.stride(to: 10, by: 2))  // [0, 2, 4, 6, 8]

Swift 3

斯威夫特3

The syntax for stride has changed, now it's a free function.

stride的语法已经改变，现在它是一个自由函数。

let b = Array(stride(from: 0, through: 10, by: 2))  // [0, 2, 4, 6, 8, 10]
let b = Array(stride(from: 0, to: 10, by: 2))  // [0, 2, 4, 6, 8]