RTRFieldPredicateBlock
This is a type definition for a user-defined validation block which will be called for further verification of the data (e.g. calculating the checksum) after it has passed the regular expression check.
A typical use for the validation block would be to calculate a checksum.
typedef BOOL (^RTRFieldPredicateBlock)(NSString* value);
Parameters
- value
- The string with the recognized text of the field.
Return values
The block must return TRUE if the data is correct, FALSE otherwise.
02.03.2022 12:59:15