在swift中用正则表达式替换字符串-Replacestringwithregexinswift

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In Swift, you can use stringByReplacingMatchesInString for a regex-based replace.

在Swift中,您可以使用stringByReplacingMatchesInString进行基于正则表达式的替换。

Here is a snippet showing how to use it:

以下是显示如何使用它的代码段:

let txt = "myname@test.com"
let regex = NSRegularExpression(pattern: "([^@\\s]+)@test\\.(\\w+)", options:nil, error: nil)
let newString = regex!.stringByReplacingMatchesInString(txt, options: nil, range: NSMakeRange(0, count(txt)), withTemplate: "$1@hoge.$2")
println(newString)

Note that I changed the regex to

请注意,我将正则表达式更改为

• ([^@\\s]+) - matches 1 or more characters other than @ or whitespace

([^ @ \\ s] +) - 匹配@或空格以外的1个或多个字符

• @ - matches @ literally

@ - 匹配@字面意思

• test\\.(\\w+) - matches test. literally and then 1 or more alphanumeric character (\w+).

test \\。(\\ w +) - 匹配测试。字面上然后是1个或多个字母数字字符(\ w +)。

Note that in the replacement string, you do not need to escape the period.

请注意,在替换字符串中,您无需转义句点。