Re: What do you like in a Collection class?

What is different between what you call a collection (im assuming it isnt _exactly_ the same as VB calls a collection) and a hash or tiedhash?

Personally I dont understand the difference.

Consider the methods you listed.... Now lets have a look at the Tie::Hash documentation...

TIEHASH classname, LIST
STORE this, key, value
FETCH this, key
FIRSTKEY this
NEXTKEY this, lastkey
EXISTS this, key
DELETE this, key
CLEAR this
[download]

Seems like this cover pretty much what is needed from a collection. More advanced methods could be made available through the tied() keyword, in fact you could use some intelligent parameter conventions and aliases to provide both the standard tiedhash interface and a more powerful OO oriented one as well. (For instance in one TIEHASH i wrote I did just this with the "FIRSTKEY" method)

Yves / DeMerphq
---
Writing a good benchmark isnt as easy as it might look.

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Re: What do you like in a Collection class? by Abigail-II (Bishop) on Jul 10, 2002 at 11:26 UTC
It looks like "collections" are basically linked lists. `Tie::Hash` is a far cry away from linked lists. Somewhere, somewhen, I posted an implementation of linked lists in Perl. Probably on comp.lang.perl.misc. Google might be able to find it. Abigail	[reply] [d/l]
Re: Re: What do you like in a Collection class? by demerphq (Chancellor) on Jul 10, 2002 at 13:42 UTC
"Collections" are linked lists? Weird. That contradicts the concepts that ive seen the term applied to, but whatever. Incidentally there are a number of modules using linked list implementations underneath on CPAN. Yves / DeMerphq --- Writing a good benchmark isnt as easy as it might look.	[reply]