validateLastName static method

[String?] validateLastName(

1. [[String] value]

)

Method to validate a user's last name.

params:

• value: the value of the last name

returns:

• String?: error message if last name is invalid.

Implementation

static String? validateLastName(String value) 

1. talawa
2. validators
3. Validator
4. validateLastName static method

Validator class