>>>>> "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
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