Consider this (notably, the difference between $localPrivateVarX and $localPersistentY): 
#!/usr/bin/perl

use strict;

my    $GlobalA = 1;

foreach my $notAGlobalB (qw /X Y Z/)
{
    &displayDashedLine();
    my $returnValueFromM = &subM($notAGlobalB);
    print "Return:  \$GlobalA = '$GlobalA', \$notAGlobalB = '$notAGlob
+alB', \$returnValueFromM = '$returnValueFromM'\n";
    my $returnValueFromN = &subN($notAGlobalB);
    print "Return:  \$GlobalA = '$GlobalA', \$notAGlobalB = '$notAGlob
+alB', \$returnValueFromN = '$returnValueFromN'\n";
}
&displayDashedLine();

exit;


sub displayDashedLine
{
    print "----------------------------------------\n";
}


sub subM
{
    my ($parameterM1, @everythingElse) = @_;
    my $localPrivateVarX;
    if (!defined $localPrivateVarX)
    {
        $localPrivateVarX = 0;
    }
    $localPrivateVarX++;
    print "  SubM:  \$GlobalA = '$GlobalA', \$parameterM1 = '$paramete
+rM1', \$localPrivateVarX = '$localPrivateVarX'\n";

    return;
}


{
    my $localPersistentY;

    sub subN
    {
        my ($parameterN1, @everythingElse) = @_;
        if (!defined $localPersistentY)
        {
            $localPersistentY = 0;
        }
        $localPersistentY++;
        print "  SubN:  \$GlobalA = '$GlobalA', \$parameterN1 = '$para
+meterN1', \$localPersistentY = '$localPersistentY'\n";

        return;
    }
}

exit;

__END__

[download]

In reply to Re: Use of "my" after Perl v5.14 by marinersk
in thread Use of "my" after Perl v5.14 by Rohit Jain

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.