숫자만 골라내기

    NSError * error;

    

    NSString * pattern = @"\\d+";

    NSRegularExpression * ex = [NSRegularExpression regularExpressionWithPattern:pattern options:NSRegularExpressionCaseInsensitive error:&error];

    

    NSString * str = @"1,234,5678,90123,456789";

    NSArray * matches = [ex matchesInString:str options:NSMatchingReportProgress range:NSMakeRange(0, [str length])];

    

    for (NSTextCheckingResult * ret in matches) {

        NSLog(@"digits : %@", [str substringWithRange:ret.range]);

    }

Mac for 10.7 and iOS for 4.0 이상