In the second, showArray(@arr) appears before the prototype for showArray is known, so the prototype is ignored. In the first, showArray(@arr) becomes showArray(\@arr), but there's no change in the second snippet. Yet another reason to avoid prototypes. The following is a solution that's no less efficient and doesn't exhibit the problem regardless of the order in which the functions are defined:

#!/usr/bin/perl -w
use strict;

sub higherLevel
  {
  my(@arr) = @{(shift)};
  showArray(\@arr);
  }

sub showArray
  {
  my(@arr) = @{(shift)};
  my($temp);
  foreach $temp (@arr) { print "$temp\n"; }
  }

my(@arr) = ("one","two","three");
higherLevel(\@arr);

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In reply to Re: a HASH ref while "strict refs" ERROR by ikegami
in thread a HASH ref while "strict refs" ERROR by mosh

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