Question

NSString *test = @"example";

NSString *test2 = @"ex12am243ple";

Is there any easy way to determine which string contains a number in it (0-9) and which one doesn’t?

Thanks.

Answer 1

if([testString rangeOfCharacterFromSet:characterSetOfNumbers].location == NSNotFound)
{
//there are no numbers in this string
}
else
{
//there is at least 1 number in this string
}

p.s. you can look at the docs of NSCharacterSet for the available ones, but the one you probably want is decimalDigitCharacterSet so you would use [NSCharacterSet decimalDigitCharacterSet] in place of “characterSetOfNumbers” in the above code.