flexichain-devel

flexichain-devel@common-lisp.net

5 discussions

[flexichain-devel] .asd file
by Christophe Rhodes 30 Jan '07

30 Jan '07

Hi, The flexichain .asd file includes an almost-useless package: there are no persistent definitions other than the system itself, so (since asdf arranges for the file to be loaded in a temporary package which uses the ASDF package) there's no need to define and use a -system package. (Packages are surprisingly heavyweight objects, which is why I'm drawing this to your attention). There's one way in which having a package definition can be useful -- for incremental development of the .asd file itself. However, you can achieve that, if this is one of your goals, with an explicit asdf: prefix to the defsystem symbol. Cheers, Christophe [ PS: I'm not subscribed to this list, so Cc me if you want more discussion on this point. ]

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[flexichain-devel] write privileges for group members
by Robert Strandh 15 Jan '07

15 Jan '07

Hello, Could you please change the mode of /project/flexichain/www and /project/flexichain/www/download so as to allow write operations for group members? Thanks in advance, -- Robert Strandh --------------------------------------------------------------------- Greenspun's Tenth Rule of Programming: any sufficiently complicated C or Fortran program contains an ad hoc informally-specified bug-ridden slow implementation of half of Common Lisp. ---------------------------------------------------------------------

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[flexichain-devel] A couple of flexichain questions
by Brad Beveridge 25 Oct '06

25 Oct '06

I recently put an editor project on common-lisp.net (http://common-lisp.net/project/vial/). Troels contacted me and rightly asked why I didn't use Flexichain to implement my buffer (I use a linked list of strings basically). I've thought about the two methods (gap buffer vs linked list of lines), and basically the performance for either method is probably about the same for most operations. The one big place that a gapbuffer wins is when you want to treat a large section of the buffer as a read-only string. For a list of lines you need to cons up a new string, for a gap buffer (assuming it is locked), you simply need to move the gap and take a pointer into the gap buffer. I envision using this "large string" mode of the gap buffer for: - searching one huge string with CL-PPCRE - saving the buffer in one call So after all my rambling I have two questions: 1) Is it appropriate to use Flexichain in this "one large string" manner? Obviously you don't want to always convert to this form, but it is handy for running a search on the buffer and some other uses. 2) What is involved in creating a function that consolidates the data into a contiguous chunk that is suitable for creating a displaced array into? Thanks Brad

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[flexichain-devel] patches for weak pointers
by Robert Strandh 17 Oct '06

17 Oct '06

Hello, I just realized I was not on the Flexichain mailing list, which is why I haven't applied the patches. Better late than never, I guess. Thanks again! -- Robert Strandh --------------------------------------------------------------------- Greenspun's Tenth Rule of Programming: any sufficiently complicated C or Fortran program contains an ad hoc informally-specified bug-ridden slow implementation of half of Common Lisp. ---------------------------------------------------------------------

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[flexichain-devel] Weak-pointers patch (and more)
by Luís Oliveira 26 Apr '06

26 Apr '06

Hello, The following patch implements weak-pointers in utilities.lisp for a bunch of Lisps (sbcl, cmucl, clisp, allegro, openmcl, corman and lispworks). Also it fixes the eval-when around the warning which had ":evaluate" instead of ":execute". The code is mostly a copy&paste from trivial-garbage. Also, here's a small patch to get rid of some warnings. (OpenMCL still throws some 2 warnings but I couldn't figure out why.) HTH -- Luís Oliveira http://student.dei.uc.pt/~lmoliv/ Equipa Portuguesa do Translation Project http://www.iro.umontreal.ca/translation/registry.cgi?team=pt

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