Returning multiple values from embedded Perl script

Question

I have a Perl script embedded in a C program. I want to return an array of integers from the Perl script. However, the number n of integers to be returned, is an input to the program and cannot be hardcoded in the Perl script. Is there a way to do this? Here are a few examples:

Example 1 (n is known and equal to 2 in PERL subroutine):

@num = {1, 2, 3, 4};
($num[0], $num[1]); // works, returns the two values

Example 2 (n is not known):

@num = {1, 2, 3, 4}; 
(@num); // does not work

Example 3 (n is not known):

@num = {1, 2, 3, 4};
$string = "($num[0], $num[1], $num[2], $num[3])";
$string; // does not work

If it was helpful, please accept sputnick's answer by clicking on the green-white tick to the left from it. — pts
– pts, Commented Dec 4, 2014 at 1:28

ikegami · Accepted Answer · 2014-12-04 01:51:18Z

3

Take care, { } is used for HASH references. I think you simply need :

my @num = qw/1 2 3 4/;
@num;

or

my @num = (1, 2, 3, 4);
@num;

or

my @num = (1..4);
@num;

or usig an ARRAY ref :

my $num = [1, 2, 3, 4];
@$num;

edited Dec 4, 2014 at 1:51

ikegami

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answered Dec 4, 2014 at 1:13

Gilles Quénot

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