CODEWITHSUNDEEP
iphonenspredicate
Gerardo
Gerardo

Reputation: 5830

Iphone: NSPredicate in order to check an id

i have to check if an id is valid to register an user in the system. I have been reading about the class NSPredicate in order to do this.

However, i don't know how to build the next pattern:

A valid id has to be composed by 8 numbers and one final letter. Can anyone help me with that?

Thanks

Upvotes: 1

Views: 396

Answers (1)

jbenet
jbenet

Reputation: 3060

Try this out (untested):

NSString *stringID = ...; // get the id
NSString *regex = @"[0-9]{8}[A-Za-z]";
NSPredicate *rp = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
if ([rp evaluateWithObject:stringID]) {
  // ID is valid!!
} else {
  // ID is not valid.
}

Upvotes: 2

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