It's hard to test without having code I can run, but I changed a couple lines (marked w/ comments in the code and described more completely below) to get the functionality I think you want. Does the following work how you want it to?
sub extractData
{
my @projects;
push( @projects, [readOnly("$proj Data.txt"), "A"] );
unless( $pointerProj eq "NONE" )
{
push( @projects, [readOnly("$pointerProj Data.txt"), "B"] );
}
for( @projects )
{
my @data = @{ $_->[0] }; # WAS: my @data = @{ $_[0] };
my $key = $_->[1]; # WAS: my $key = $_[1];
...
}
}
sub readOnly
{
my @contents;
my $filePath; my $file;
my $errMsg;
$filePath = "$path\\" . $_[0];
$errMsg = "Unable to read $filePath: $!";
open $file, '<', $filePath or die $errMsg;
@contents = <$file>;
close $file;
return \@contents; # WAS: return \@contents;
}
I changed readOnly() to return an array reference. Each project is then an array reference with another array reference (the 'data') at index 0 and a text string (the 'key') at index 1. To get these two items, you need to dereference the outer array reference with $_->[X]. You used $_[X] which is how you get an item from an array, not an array reference.
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