On 2010.04.15 03:37, raphael() wrote:
> On Thu, Apr 15, 2010 at 10:55 AM, Uri Guttman <u...@stemsystems.com> wrote:
>
>>>>>>> "r" == raphael() <raphael.j...@gmail.com> writes:
>>
>> r> # abc <-- this_should_be_hash_name
>> the proper solution is to use a hash to hold these hashes. this is
>> cleaner, safer, allows you to isolate this data, pass it around easily,
>> reclaim its memory when it is not being used anymore, etc.
>> so just declare a top level hash like this:
>>
>> my %top_data ; # pick a better name
>>
>> and then just assign into it the data you want with an anonymous hash:
>>
>> $top_data{ $1 } = { $2 => $3 } ;
>>
>> read these docs for more on this:
>>
>> perlreftut
>> perldsc
>> perllol
>>
> But as a beginning Perl programmer I find references extremely complicated.
> Although I have to learn them sometime.
Although I Am Not A Programmer, if you do actually desire spending time
on writing Perl code, my strong advice would be to ingrain references
into your head as soon and as fast as possible.
Once you have a clear understanding of how $, @ and % work, spend as
much time as it takes to learn about references.
I can personally assure you that if you put references off because they
seem intimidating, you will waste years of writing one-off scripts, that
when you look back on them, you will condemn yourself.
Perhaps that is easy to say when I have an 'ok' understanding of Perl
references, but nonetheless, I'd hate to see anyone else make the same
mistake of forgoing them like I did.
My excuse was that I had been exposed to so many different usage idioms
by so many different people by reading many different books and online
information (especially the {} enclosure stuff), that it isn't worth
learning.
Don't fret. The learning curve isn't really that insurmountable. Read
lots, and practice. If you are determined, then in a very short time,
the light will go on, and all of a sudden, you'll have your own style of
populating and extracting multi-level structures, and you'll even be
able to understand them in other people's style (or at least know what
to Google for).
fwiw, a dispatch table (as discussed in another thread) is created
entirely with references. Many people use dispatch tables to automate
processes that follow the rabbit no matter how deep the hole, or how
many branches the hole has ;)
> Going to code now. Will be back if I get stuck && *thanks* all.
Good luck, there's always been someone here to provide feedback.
Steve
--
To unsubscribe, e-mail: beginners-unsubscr...@perl.org
For additional commands, e-mail: beginners-h...@perl.org
http://learn.perl.org/
