The use of ios-regular expressions

1 currently used regular expressions are divided into two types, one is the nspredicate of iOS, one is open source Regexkitlite, the following will be described in two ways of using the method
Nspredicate (for quick Find, matching)

NSString * regex = @ ". *\\[.*\\]";//check [] for GPS data

Nspredicate * pred = [nspredicate predicatewithformat:@ "SELF matches%@", regex);

BOOL IsMatch = [pred evaluatewithobject:datastr];
Regexkitlite (need to load RegexKitLite.h. m file) (for string fetching)

NSString * regexstring = @ "\\d{2} ' \\d{2} ' \\d{2}\" North ";

Latitude = [Datastr stringbymatching:regexstring capture:1l];

NSLog (@ "North:%@", latitude); Parse GPS data North