在Swift 3.0中使用String.range [英] Usage of String.range in Swift 3.0

问题描述

let us = "http://example.com"
let range = us.rangeOfString("(?<=://)[^.]+(?=.com)", options:.RegularExpressionSearch)
if range != nil {
    let found = us.substringWithRange(range!)
    print("found: \(found)") // found: example
}

此代码提取 substring 我搜索了Internet，发现 rangeOfString 更改为 range（） 。

This code extracts substring between backslashes and dot com in Swift 2. I searched Internet and I found that rangeOfString changed to range().

但是我仍然无法使代码在Swift 3.0中运行。你能帮助我吗？

But still I could not make the code work in Swift 3.0. Could you help me ?

编辑：我正在使用swift 3 07-25 build。

edit : I'm using swift 3 07-25 build.

推荐答案

在swift 3.0中 rangeOfString 语法改变如此。

let us = "http://example.com"
let range = us.range(of:"(?<=://)[^.]+(?=.com)", options:.regularExpression)
if range != nil {
     let found = us.substring(with: range!)
     print("found: \(found)") // found: example
}

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