How do I verify this struct has no value
Student getStudent()
{
...
Student s;
if(condition) s = Student;
return s;
}
auto stu = getStudent();
//which will work and is best?
if (stu is null) //doesn't wrk.
if (stu is Student.init) //will confirm when i get to my pc
Or how would you do it? Will you make it null first? (I'm not
used to statically typed languages internals)
Another issue. I'm creating a function to authenticate user
login. I want to determine login failure (Boolean) and error
message but D does have multiple return type (could use struct
but will make code dirty).
in such case, would you use a callback delegates function or will
use a string (str == "ok", str == "no") or go with a struct?
