[fpc-devel] Generic Programming Units

Michael Van Canneyt michael at freepascal.org
Tue Jun 21 21:24:48 CEST 2005

On Tue, 21 Jun 2005, Florian Klaempfl wrote:

> Dean Zobec wrote:
> > As the project looks like a long term one and I think that fpc urgently
> > needs a optimized hash table  I'll also work on a streamlined hash table
> > with a chaining technique as a collision resolution scheme and a paging
> > for the allocation of the nodes in the chains, to have an associative
> > container that would easily beat the TStringList in search speed when
> > the number of items added is more than 100.000 (the IndexOf() function
> > in an unordered TStringList does a linear search).
> A good hash class is even a candidate for the classes unit imo.

I would make that the contnrs unit. I think it belongs more together with 
objects such as a stack and queue...

What is the performance difference between a hash() and a binary search on 
an ordered list ? I've also been working with an 'associative' stringlist, but
I was using an ordered stringlist to keep the data, so a binary search is done.


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