Thanks Uri and Parag.
After reading your comments and taking a coffee, I understand it.
:)
Thanks,
Bruce.
On Sun, Nov 15, 2009 at 12:18 AM, Uri Guttman <u...@stemsystems.com> wrote:
> >>>>> "PK" == Parag Kalra <paragka...@gmail.com> writes:
>
> first off, as a newbie here, please learn to bottom post. reading is
> done top down so put your comments BELOW the quoted and edited post you
> are commenting about.
>
> PK> Even I am a beginer but let me throw some pointers. Experienced
> PK> users kindly correct me if I am wrong....
>
> will do. but it is better for newbies to wait until they have a question
> they can answer. what if the OP took your (incorrect) answer and decided
> this list is full of people who don't know perl? there are plenty here
> to help out and people of all skills are here. best to learn more before
> you help and steer someone in a bad direction.
>
> >> use constant 'cache_result' => {};
> >>
>
> PK> First line is declaring a constant. What I could not get is that what
> PK> constant are we trying to declare i.e a variable, hash or a reference.
> PK> Read more - perldoc constant
>
> see, i put the code ABOVE your comment so it is easy to see what you are
> talking about. this is called bottom posting where you intersperse your
> comments below the previous message parts.
>
> and yes, that is declaring a constant. you can tell it is a hash as it
> is initialized to a hash reference. it makes little sense to me why you
> would declare such a beast as the reference can have its contents
> altered and so it really isn't constant. the symbol 'cache_result' can't
> have its value changed from the initial hash reference.
>
> PK> And then there is a function which perhaps is returning a reference to
> PK> something.
>
> >> sub abc {
> >> ............
> >> ...........
> >> return cache_result->{$self->name};
> >>
> >> }
>
> well, without more code we can't tell what this means. we can make some
> educated guesses. $self usually means there was some object
> created. name would be a method of that object, likely an accessor. so
> the constant hash ref is caching some stuff based upon the name inside
> the object. that is what is being returned. it would be easy to tell the
> full story with more code but that is as far as i can tell from the
> snippet here.
>
> PK> Sorry for this vague kind of answer but even I am in process of
> learning
> PK> Perl. :)
>
> keep learning more perl. you weren't far off here but accuracy is
> important when answering technical questions. vague ideas and guesses
> are not good things here.
>
> thanx,
>
> uri
>
> --
> Uri Guttman ------ u...@stemsystems.com -------- http://www.sysarch.com--
> ----- Perl Code Review , Architecture, Development, Training, Support
> ------
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>
