This is not for kids to try at home. :^) Not stuff for beginners.
Prototypes are rather
weird in Perl and usually best avoided.
They arcanely change context.
But it does get around the flattened parameter list issue.
#!/usr/bin/perl -w
use strict;
my @arr1 = qw/This is line 1/;
my @arr2 = qw/The 2nd line/;
sub print2arrays(\@@){
local $, = " ";
my $a1 = shift;
my @a2 = @_;
print @$a1, "\n";
print @a2, "\n";
}
print2arrays @arr1, @arr2;
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