ios - iOS 中的正则表达式替换

Question

我需要用干净的字符串替换脏字符串:

-(void)setTheFilter:(NSString*)filter
{
    [filter retain];
    [_theFilter release];

    <PSEUDO CODE>
    tmp = preg_replace(@"/[0-9]/",@"",filter);
    <~PSEUDO CODE>

    _theFilter = tmp;
}

这应该消除 filter 中的所有数字，以便:

@"Import6652"
会产生@"Import"

我如何在 iOS 中执行此操作？

谢谢!

Answer 1

NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:
                              @"([0-9]+)" options:0 error:nil];

[regex replaceMatchesInString:str options:0 range:NSMakeRange(0, [str length]) withTemplate:@""];

swift

do {
    let regex = try NSRegularExpression(pattern: "([0-9]+)", options: NSRegularExpressionOptions.CaseInsensitive)
    regex.replaceMatchesInString(str, options: NSMatchingOptions.ReportProgress, range: NSRange(0,str.characters.count), withTemplate: "")
} catch {}