为NSString测试正则表达式

Posted 2021-02-22

NSString *mystring = @"Hello World!";
NSString *regex = @".*l{2,}.*";
 
NSPredicate *regextest = [NSPredicate
                         predicateWithFormat:@"SELF MATCHES %@", regex];
 
if ([regextest evaluateWithObject:mystring] == YES) {
    NSLog(@"Match!");
} else {
    NSLog(@"No match!");
}