Perl -- unable to construct array of objects

Question

I've tried two similar bits of syntax. This first one works:

   my $obj = PI::something::ObjectManipulator->new();
   $obj->setValue('HELLO');
   my $objList = [$object];

This, however, doesn't:

  my $objList= [];
  foreach my $value (@values) {
    my $obj = PI::something::ObjectManipulator->new();
    $obj->setValue($value);
    push @$objList, $obj;
  };

What is the difference between these two way of doing things? Why doesn't the second work? (By not work, it seems to be that $objList is still empty at the end of the code.)

Looks good from here. Are you sure that @values is not an empty list? — mob
– mob, Commented Jun 16, 2016 at 18:55

ikegami · Accepted Answer · 2016-06-16 20:14:27Z

4

Assuming my $objList = [$object]; is a typo for my $objList = [$obj];, and assuming, my @values = 'HELLO';, there are no differences.

Assuming you meant "@$objList is still empty" when you said "$objList is still empty", that can only happen if the loop isn't entered (i.e. @values is empty).

answered Jun 16, 2016 at 20:14

ikegami

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