Need perl help

Hi Wilcoxon,

Works like charm ..

Can you please add few comments on the below so i can learn it.


my ($num, $fil) = split ",";

So the above line will split using comma and place the key value respectively
so i get $num=1 and $fil=image1.jpg for 1st line

push @{$data{$num}}, $fil;

so here we push the $fil to the array and we have

@array = (1,image.jpg);

Am i right, i dont understand this part , please clarify

Thanks

split uses a regex (hence /,/ instead of ',').  Yes, split will split the value ($_ by default) using the regex provided into a list.  Since there are only two values per line, I prefer to enumerate each (the general form would be @list = split /,/).

Not quite.  %data is a hash so $data{$num} is an element of the hash (in this case $data{1}).  Push adds the value ($fil) to the array (which in this case is really the arrayref $data{1}).  So what we really have is $data{1} = [image.jpg].

I never remember which actions autovivify so I usually default on the safe side.

The differences in behavior for some values is why I always use regex syntax for split (plus that's what the perldoc suggests for syntax).