String.range 在 Swift 3.0 中的使用 [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
}

这段代码在 Swift 2 中提取了反斜杠和 dot com 之间的 substring.我搜索了互联网，发现 rangeOfString 变成了 range().

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

但我仍然无法使代码在 Swift 3.0 中工作.你能帮我吗?

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

我正在使用 swift 3 07-25 build.

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

推荐答案

In swift 3.0 rangeOfString 语法改成这样.

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
}

这篇关于String.range 在 Swift 3.0 中的使用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！