Regex for an email address doesn't work

Question

I\'m trying to check if some email address is correct with the following code :

NSPredicate *regexMail = [NSPredicate predicateWithFormat:@\"SELF MATCHES \'.*@.*         


        

Answer 1

try putting double slash instead of one slash. that's what might the Unknown escape sequence mean.

here is a website that can help you understand how to use regex: http://www.wellho.net/regex/java.html

or just find the appropriate regex for email address here: http://regexlib.com/DisplayPatterns.aspx?cattabindex=0&categoryId=1