[Moose-dev] Re: faster stream

I experimented a quick hack for StandardFileStream BufferedFileStream -> 5x to 7x on micro-benchmarks I stopped developing it because working on current Stream hierarchy just is horrorfull ! Like for example an inst var change of semantic in a subclass, or is just not used (try upToAnyOf: in various streams to see what I mean)... Disgusting... I prefer a full rewrite, and it is under development at http://www.squeaksource.com/XTream It is read/write to anyone and MIT. Yet i have Xtreams on collections and readOnly files passing some tests (only 40% coverage). It tries to gather lots of ideas popping regularly in various flavours - squeak/vw/gst (lazy streams, Nile, VW Xtreams, generators, etc...). The real bottleneck in Squeak/Pharo is MultiByteFileStream, and it is a piece of code I recommend for teaching how to not program in Smalltalk. I won't spend much time to change it any more, just replace and throw away will now be my policy. The Buffered trick should also be ported to Nile, it would be then interesting to compare complexity and efficiency of both libraries. Cheers Nicolas 2009/12/3 Stéphane Ducasse <stephane.ducasse(a)inria.fr>fr>: