email static method
Validates whether the given email is a valid email address.
The email parameter should be a string representing an email address.
Returns true if the email is valid, false otherwise.
Implementation
static bool email(String email) {
String emailRegEx =
r'^[a-zA-Z0-9.a-zA-Z0-9.!#$%&’*+/=?^_`{|}~-]+@[a-zA-Z0-9]+\.[a-zA-Z0-9.]{2,}$';
RegExp regExp = RegExp(emailRegEx);
return regExp.hasMatch(email);
}