Re: Array of structures within an array of structures.

[VinsWorldcom]

Something like this:

UPDATE: In my zest to copy the original code, I made a mistake in my code below. Thanks Laurent_R for pointing it out in the node below. Corrected code follows:

# your initial definitions here

# maybe a loop starts here
my $student;  # single student
my @students; # all students in 1 class

$student = {
    studentName => 'John',
    studentSurname=>'Something',
    studentID=>'9534',
    age=>'12'
};
push @students, $student;

# Eliminate loading next student below explicitly
# by using a loop to read from source file, DB, etc.
$student = {
    studentName => 'Mary',
    studentSurname=>'Something2',
    studentID=>'5489',
    age=>'13'
};
push @students, $student;

%classroom = (
    classroomID => 10,
    classroomName => 'classroom1',
    students => \@students
);

# Rinse, repeat

[Laurent_R]

Hi VinsWorldcom,

I guess it's a typo, but this part in your code:

$student = (
    studentName => 'John',
    studentSurname=>'Something',
    studentID=>'9534',
    age=>'12'
);
push @students, $student;

probably does not work properly, as far as I can say. The value of $student is now 12 because you are assigning a list to a scalar, and you're then pushing 12 into @students.

You probably want either directly an hash ref like this:

$student = {
    studentName => 'John',
    studentSurname=>'Something',
    studentID=>'9534',
    age=>'12'
};
push @students, $student;

Or an hash on which you later take a ref:

%student = (
    studentName => 'John',
    studentSurname=>'Something',
    studentID=>'9534',
    age=>'12'
);
push @students, \%student;

[VinsWorldcom]

You're right, I'm wrong. I've corrected my code in the node above (so as to not leave incorrect code there for posterity) and provided credit to you so your above correction doesn't seem misplaced.

Thanks!