Originally posted by: Yashgt

Hi,

I have a tuple:
tuple Students {
    int rollnum; 
    String name; 
    .
    .
    .
} 

{Students} studs = ...;
I need an array:
int marks[<this index should be of Students.rollnum>] = ...;

How do I declare the array such that the indexes in the array are not entire Student objects but only the rollnums?

Regards

Hi,

you may write:

tuple Students {
    key int rollnum;
    string name;
    
}

{Students} studs = {<1,"alice">,<2,"bernard">};

{int} rollnums={s.rollnum | s in studs};

int marks[rollnums] = [3, 10];

execute
{
writeln(marks);
}

regards