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Re: OOP/Linked List Question

by holli (Monsignor)
on Feb 07, 2005 at 16:22 UTC ( #428721=note: print w/replies, xml ) Need Help??


in reply to OOP/Linked List Question

You can build a real linked list, you donīt even need objects:
use strict; use warnings; #build a cyclic list of hashes my $root = {value => 0, next => undef}; my $last = $root; for (my $i=1; $i<5; $i++) { my $node = { value=>$i, next => undef}; $last->{next} = $node; $last = $node; } $last->{next} = $root; #cycle: my $node = $root; for ( my $j=0; $j<10; $j++ ) { print $node->{value}, "\n"; $node = $node->{next}; }
Update:
The basic algorithms are the same than in any other language. The most important here is an understanding of how references work (see perlre), so i leave the rest as excercise for the interested reader.
holli, /regexed monk/

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[ambrus]: Corion: ah, so you want a library that parses HTTP, and you want to do the IO yourself, and don't want a full AnyEvent wrapper.
[ambrus]: Corion: I think I parsed a HTTP header from a string with LWP once. You can definitely use that to create a HTTP message too. The problme is
[ambrus]: that if you do that, you'd have to find where each HTTP response ends, which is nontrivial if you want persistent connections (essential for performance if you have small requests).
[Corion]: ambrus: Yes, ideally an API that I feed the incoming data piece by piece and that I can ask "is that response done" and "what should I do next" and "please construct the appropriate redirect for me"
[Corion]: ambrus: Yes, ideally the module would do all that nasty stuff for me and give me a way to ask it what the current situation is
[ambrus]: Corion: you could also consider using some wrapper over the multi interface of curl, I think Net::Curl might be a good one, since implementing enough of what it expects from the event loop might be easier than a full AnyEvent interface.
[ambrus]: Corion: you could also consider using IO::Async and its POE driver and some HTTP module for it, but I don't know if that would solve your problems with AnyEvent+POE

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