I am wondering about the dynamic memory allocation for arrays and hashes which dont seem to change a pointers reference to it when they grow (I could be wrong)? What does the pointer actually point to and what does that point to on down until we hit actual memory? 
%hash;
$hash{'name'}=1;
$ptr=\$hash{'name'};
print $$ptr;
for(1..1000){
$hash{"$_"}=$_;
}
print $$ptr;

[download]
I modified waters code 
my $x = {};
$x->{'named'} = 'watermelon';
print  $x->{'named'} , " is quite delicious\n";
my $ref = \   $x->{'named'};
$$ref = 'cantelope';
print  $x->{'named'} , " is quite delicious\n";
$x->{'named'}='mango';
print  $x->{'named'} , " is quite delicious\n";
print  $$ref , " is quite delicious\n";
for(1..10){
$x->{'named'}=$_;
print "$$ref $x->{'named'}\n";
}

[download]
$$ref did print mango and thus when what it pointed to changed it pointed to the changed value. So once a pointer points to an object and that object gets moved in physical memory due to (memory allocation or optimization or something) then the pointer will still point to the correct place. (until garbage collection or its assigned a different value, I am guessing) thanks all

In reply to pointer memory and dynamic memory by pmtolk

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