Question

How do I write a regular expression for a name?

I would like it to validate The following examples:

Albert Einstein

ALBERT EINSTEIN

ALBert EINstein

alberT einstIN

Ale’rt E’i’n’t’e’in

These should all be considered valid.

This is what I have so far, but it fails:

-(BOOL) validateName: (NSString *) name{
    
    NSString *nameRegex = @"(?:[A-Z]+[a-z' '])"; 
    NSPredicate *nameTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", nameRegex];
    return [nameTest evaluateWithObject:name];
} 

Can anyone suggest an improvement?

Answer 1

The right Regular Expression is this one:
^[a-zA-Z ]+$

This Regular Expression recognize alle the word containing lower/capital letters separated by spaces.

You can test your Regular Expression here