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<p class=MsoNormal>Some of the advantages of using an array are the push and
pop functions.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>The following instantiates a reference on the stack that
points to an (anonymous) empty array on the heap:<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>What I would like to do is:<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoListParagraph style='margin-left:38.25pt;text-indent:-.25in;
mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>1.<span
style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Instantiate
a reference on the stack that points to an empty, anonymous array on the heap.<o:p></o:p></p>
<p class=MsoListParagraph style='margin-left:38.25pt;text-indent:-.25in;
mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>2.<span
style='font:7.0pt "Times New Roman"'> </span></span><![endif]>“push”
a reference ($a2ref) into the original anonymous array that points to a
secondary, anonymous array<o:p></o:p></p>
<p class=MsoListParagraph style='margin-left:38.25pt;text-indent:-.25in;
mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>3.<span
style='font:7.0pt "Times New Roman"'> </span></span><![endif]>“push”
a series of references into the array referenced by $a2ref<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>An example might look something like the following:<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>$a1ref = [undef];<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>(The values to be
pushed are as follows);<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'> Washington $a1ref->[0]<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'> Seattle $a1ref[0]->[0]<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'> Olympia $a1ref[0]->[1]<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'> Tacoma $a1ref[0]->[2]<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'> Oregon $a1ref->[1]<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'> Portland<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'> Salem<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'> Beaverton <o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Finally, I would like to pop (or shift) values from $a1ref
followed by the individual members of the secondary array (such as
$a1ref[0]->[0]).<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>The problem is that I don’t have a clue (nor am I able
to find) how to use (or the syntax involved to) “push” (or unshift)
and “pop” (or shift) values into and out of this described data
structure.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I appreciate any help I can get.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Neil Heller<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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