http://blog.gmane.org/gmane.comp.lang.factor.general hourly 1 1901-01-01T00:00+00:00 http://gmane.org/img/gmane-25t.png http://gmane.org http://comments.gmane.org/gmane.comp.lang.factor.general/1435 ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone_______________________________________________ Factor-talk mailing list Factor-talk-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f< at >public.gmane.org https://lists.sourceforge.net/lists/listinfo/factor-talk Alex Chapman 2008-05-08T07:48:57 http://comments.gmane.org/gmane.comp.lang.factor.general/1434 ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone_______________________________________________ Factor-talk mailing list Factor-talk-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f< at >public.gmane.org https://lists.sourceforge.net/lists/listinfo/factor-talk Alex Chapman 2008-05-08T07:44:06 http://comments.gmane.org/gmane.comp.lang.factor.general/1423 Hi Phil, Try parsing the following: "foo \"bar\" bar" <string-reader> csv Also perhaps lines starting with # should be ignored as comments? Slava ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone Slava Pestov 2008-05-05T22:51:37 http://comments.gmane.org/gmane.comp.lang.factor.general/1421 Funny: error: git-checkout-index: unable to create file build-support/factor.sh (Permission denied) And now factor.sh is gone. :-) Stefan Scholl 2008-05-05T07:28:14 http://comments.gmane.org/gmane.comp.lang.factor.general/1417 Hello, There is an issue with csv parser, where if a quoted field is followed immediately by newline, the newline is ignored. The following test demonstrates the problem; and a fix. Cheers, Philip diff --git a/extra/csv/csv-tests.factor b/extra/csv/csv-tests.factor index 6ab26c7..858736a 100644 --- a/extra/csv/csv-tests.factor +++ b/extra/csv/csv-tests.factor < at >< at > -46,9 +46,11 < at >< at > IN: csv.tests [ "Year,Make,Model\n1997,Ford,E350\n2000,Mercury,Cougar" <string-reader> csv ] named-unit-test - +"Quoted field followed immediately by newline" +[ { { "foo" "bar" } + { "1" "2" } } ] +[ "foo,\"bar\"\n1,2" <string-reader> csv ] named-unit-test - ! !!!!!!!! other tests [ { { "Phil Dawes" } } ] diff --git a/extra/csv/csv.factor b/extra/csv/csv.factor index 3953ce0..b1953f5 100644 --- a/extra/csv/csv.factor +++ b/extra/csv/csv.factor < at >< at > -31,6 +31,7 < at >< at > VAR: delimiter read1 dup { { CHAR: " [ , quoted-field ] } ! " is an escaped quote { delimiter> [ ] } ! end of quoted field + { CHAR: \n [ ] } [ 2drop skip-to-field-end ] ! end of quoted field + padding } case ; ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone Philip Fominykh 2008-05-01T08:22:40 http://comments.gmane.org/gmane.comp.lang.factor.general/1400 ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone_______________________________________________ Factor-talk mailing list Factor-talk-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f< at >public.gmane.org https://lists.sourceforge.net/lists/listinfo/factor-talk Justin DeVries 2008-04-28T16:12:13 http://comments.gmane.org/gmane.comp.lang.factor.general/1397 In git://pgdn.org/factor I went through all the old-slots-laden bunny demo code and cleaned it up to use new-slots. For kicks, I also added another OpenGL 2 demo, "spheres". ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone Joe Groff 2008-04-28T01:54:56 http://comments.gmane.org/gmane.comp.lang.factor.general/1395 Hi Dan, I've got a couple of patches and a vocab in my git repo now, but still I'm struggling to make it work properly. I'm publishing to a public repo on my laptop and then rsyncing that to my webspace, but get failures pulling from the webspace where I don't from the local dir. The webspace version is at http://phildawes.net/2008/factor.git I was wondering if you had any suggestions, or failing that if I could use some space on factorforge until I get the problem figured out? Cheers, Phil ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone Phil Dawes 2008-04-27T19:18:53 http://comments.gmane.org/gmane.comp.lang.factor.general/1391 As I see on "Getting Factor" page, current status of Linux ARM port is "Untested or outdated". I'm looking forward on getting pretty powerful ARM-Linux handheld ( http://pandorawiki.org/Pandora ) somwhere in 2008. This leads to important question - what are your plans on ARM-linux Factor? If there is no perspective of Factor 1.0 in my pocket, it will be really sad. Maxim Savchenko ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone Maxim Savtchenko 2008-04-24T08:58:10 http://comments.gmane.org/gmane.comp.lang.factor.general/1389 Hi, I needed to get the list of all combinaisons of n elements chosen in a sequence. Quite simple in fact but disturbing for a beginner. First problem, how to know if there is already a word doing this in factor? RTFM => I read "Sequence operations" several times. Documentation is very nice and interesting to read but it's sometime difficult for me to find a word doing what I want. (Or there are too many words doing quite the same, I don't know) Nevertheless reading definitions often give new ideas on how to solve problems. Second problem, maybe the needed word is undocumented somewhere in the extra directory. In that case it's maybe simpler to rewrite than to try to find it. With doc freshly reminded I wrote without too many difficulties the next two definitions (lean back and think) : columnize ( seq -- seq ) [ 1array ] map ; inline : among ( seq n -- seq ) 2dup swap length { { [ over 1 = ] [ 3drop columnize ] } { [ 2dup < ] [ 2drop [ 1 cut ] dip [ 1- among [ append ] with map ] [ among append ] 2bi ] } { [ 2dup = ] [ 3drop 1array ] } { [ 2dup > ] [ 2drop 2drop { } ] } } cond ; Real problems appear now. I have a solution but: - how to be sure it's efficient ? - if after writing it I discover word "unclip" is it useful, or more elegant, to reshape definition to replace "1 cut" ? - how to be sure that my definition is readable ? - without knowing deeply factor, how i know which part of code I must optimise, and how ? The only obvious point is that there is a simpler and more idiomatic way to do but experience comes slowly... JF ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone Jean-François Bigot 2008-04-23T21:17:06 http://comments.gmane.org/gmane.comp.lang.factor.general/1381 Hi all, I'm working on the web framework and came up with this: : render-plain-list ( seq component quot -- ) '[ , component>> renderer>> < at > ] each ; inline : render-ordered-list ( seq quot component -- ) <ol> '[ <li> < at > </li> ] render-plain-list </ol> ; inline : render-unordered-list ( seq quot component -- ) <ul> '[ <li> < at > </li> ] render-plain-list </ul> ; inline : render-list ( value renderer quot -- ) over type>> { { +plain+ [ render-plain-list ] } { +ordered+ [ render-ordered-list ] } { +unordered+ [ render-unordered-list ] } } case ; inline M: list-renderer render-view* [ render-view* ] render-list ; M: list-renderer render-summary* [ render-summary* ] render-list ; I think this is a pretty nice use-case for 'fry' and its hard to imagine how this code could be improved further. Slava ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone Slava Pestov 2008-04-22T23:59:28 http://comments.gmane.org/gmane.comp.lang.factor.general/1378 Hi all, A few people asked for this so I implemented it. You can now use fry directives in nested quotations: 3 1 '[ , [ , + ] map ] call => { 1 2 3 } This is equivalent to 3 1 '[ , , '[ , + ] map ] call And in fact it is implemented in this way. Slava ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone Slava Pestov 2008-04-22T21:28:40 http://comments.gmane.org/gmane.comp.lang.factor.general/1361 Hi all, Right now we have an 'stdio' variable and various words which operate on it, : read stdio get stream-read ; : readln stdio get stream-readln ; : write stdio get stream-write ; : print stdio get stream-print ; with-stream rebinds it and closes it after, with-stream* rebinds it without closing. This makes for very nice and concise code, but there's one problem with it and that it cannot express the case where you want to read from one file and write to another at the same time. Instead, you need to do something like this, "in.txt" utf8 <file-reader> [ "out.txt" latin1 <file-writer> [ <duplex-stream> [ ... ] with-stream* ] with-disposal ] with-disposal Or if you want to read from a file and print to the console in the same code, stdio get "in.txt" utf8 <file-reader> [ swap <duplex-stream> [ ... ] with-stream* ] with-disposal This is too awkward for a language named "Factor". I propose replacing the stdio variable with two variables, input and output. The with-stream combinator would still exist, and it would bind both, but there will be two new combinators, with-input and with- output. These will rebind just one of the two variables. The stream words would change too: reader words like read, read1, would operate on input, and writer words like write and print would operate on output. Note that these changes are pretty much backwards-compatible. Code using with-stream continues to work and very rarely does code access the stdio variable directly. A more radical idea is to remove duplex streams altogether. Instead, words like <process-stream> and <client> would return a pair of streams, a reader and a writer. A with-streams combinator with stack effect ( in out quot -- ) could be used here. Slava ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone Slava Pestov 2008-04-22T19:20:30 http://comments.gmane.org/gmane.comp.lang.factor.general/1357 Hello, Just a little heads up for y'all. The word 'subset' will likely be renamed to 'filter' in the next few days. Ed ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone Eduardo Cavazos 2008-04-22T08:08:52 http://comments.gmane.org/gmane.comp.lang.factor.general/1352 Idea of local storage in more factor-way still looks interesting for me. I have followed Slava's advice about "implement and play a little". It was interesting and not-so-hard experience. Here are results. If I want to dismiss annoying "stack micro-management", there is no need for additional named stacks. Instead of it I had come to "stack-marking named shufflers" paradigm. I'd like to show it on simple and common (for me) example from my dns library. What if we need "virtual" stream that incapsulates some "real" stream and simply counts number of symbols we are reading? TUPLE: dns-stream counter ; : <dns-stream> ( stream -- stream ) 0 dns-stream construct-boa tuck set-delegate ; M: dns-stream stream-read tuck delegate stream-read dup length pick dns-stream-counter + rot set-dns-stream-counter ; In realization of stream-read method we have four different shuffling words - tuck, dup, pick and rot. It is simpliest solution I've found with ordinal shufflers. Let's explain true meaning of used shufflers: 1) "tuck" - we need delegate of our stream, but we will need original tuple in later processing, Lets store it for future use. 2) "dup" - we need length of data, but we also need to return data as method exit value. Lets store it for future use. 3) "pick" - we need to recall previously saved tuple. But again, we will need it later, so here we should use "copying" pick and not "moving" rot. 4) "rot" - we need to recall previously saved tuple. This time it is last occurense of this value in processing, so here we should use "moving" rot and not "copying" pick. That's what I'm calling "stack micro-managment". Not easy logic for such simple task, I think. And even worse for reading. For comarsion here is my new suggestion: M: dns-stream stream-read =: self delegate stream-read =: data length <: self dns-stream-counter + <: self set-dns-stream-counter <: data ; Here I use only two different shufflers - "=: foo" and "<: foo". "=: foo" is for "mark top of the stack with foo label". And "<: foo" is for "push here value, previously marked with foo label". So we have five encounters of this shufflers: 1) "=: self" - we need delegate of our stream, but we will need original tuple in later processing, Lets mark it for future use with label "self". 2) "=: data" - we need length of data, but we also need to return data as method exit value. Lets mark it for future use with label "data". 3) first occurence of "<: self" - we need to recall previously saved tuple. Lets get it using label "self" 4) second occurence of "<: self" - we need to recall previously saved tuple. Lets get it using label "self". 5) "<: data" - we need to return result of our method. Lets get it using label "data". Looks much more readable for me. No need for tracking of stack depth, no need for tracking of copying/moving shufflers difference. And meaningful labels for self-documentation. Just try it. In attachment I included prototype realisation of this ideas. There are two additional words for ease of use. ">: foo" is synonim for "=: drop". And "[> ... ]" is synonim of "[ ... ]" with additional capability of recalling labels, marked in outter quotation. ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone_______________________________________________ Factor-talk mailing list Factor-talk-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f< at >public.gmane.org https://lists.sourceforge.net/lists/listinfo/factor-talk Maxim Savtchenko 2008-04-22T03:36:43 http://comments.gmane.org/gmane.comp.lang.factor.general/1349 [MacOS X 10.4.11 Intel, git factor 1 or 2 days old.] I entered "20 20 * ." in a Mac program that supports the use of the Services menu. Marked it and after Services -> Factor -> Evaluate Selection I get <interactive>:1 20 20 * . ^ Word not found in current vocabulary search path "delegate" f "name" "*" The following restarts are available: :1 Use the word IN: math MATH: * ( x y -- z ) Type :help for debugging help. Stefan Scholl 2008-04-21T14:49:54 http://comments.gmane.org/gmane.comp.lang.factor.general/1348 Hi Slava, Hi factor list, I've been experimenting with git and have put a factor repository on my webspace which contains the csv parser vocab I wrote a few months ago. http://phildawes.net/2008/factor.git Unfortunately when I try to pull I get: $ git pull http://phildawes.net/2008/factor.git error: pick-rref: HEAD not found No such ref HEAD at http://phildawes.net/2008/factor.git Which I don't understand because HEAD is readable. I suspect it may be the same problem as here[1]. Anyway, pulling the master branch explicitly appears to work: $ git pull http://phildawes.net/2008/factor.git master Fetching refs/heads/master from http://phildawes.net/2008/factor.git using http got b2e540e2a92df1cb7bf6ee15ddf678e7d14379ed walk b2e540e2a92df1cb7bf6ee15ddf678e7d14379ed got e136ec03c40ee883c2504726489e68498d7bf3c4 ... etc... Is this sufficient for inclusion into the main factor repo? Also what's the usual protocol for getting stuff included into Slava's factor repo - do people email privately? Thanks, Phil [1] http://kerneltrap.org/mailarchive/git/2007/9/4/256935 ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone Phil Dawes 2008-04-19T20:58:49 http://comments.gmane.org/gmane.comp.lang.factor.general/1347 OK, more as a joke I wanted to run a current Factor Windows binary with wine on my MacOS 10.4 system: $ wine factor.exe -run=listener fixme:spoolsv:serv_main (0 0x0) err:wgl:X11DRV_wglGetProcAddress No libGL on this box - disabling OpenGL support ! err:wgl:X11DRV_wglGetProcAddress No libGL on this box - disabling OpenGL support ! err:wgl:X11DRV_wglGetProcAddress No libGL on this box - disabling OpenGL support ! The die word was called by the library. Unless you called it yourself, you have triggered a bug in Factor. Please report. Starting low level debugger... Basic commands: q -- continue executing Factor - NOT SAFE im -- save image to fep.image x -- exit Factor Advanced commands: [...] .c ==== CALL STACK: [ kernel:call threads:stop ] 0 11f1e1b 501d1f0 [ kernel:>r kernel:>r kernel:dup kernel:slip kernel:r> kernel:r> kernel:roll [ kernel:>r kernel:tuck kernel:2slip kernel:r> kernel:while ] [ kernel:2nip kernel:call ] kernel:if ] 3 978f4b 4fdd0f0 [ kernel:>r kernel:call kernel:r> ] 1 621403 4fe0090 [ io.thread:io-thread syntax:t ] 0 738e0b 501d2f0 io.thread:io-thread f 62492b 51b37b0 io.windows.nt.backend:drain-overlapped f 738d23 54846d0 io.windows.nt.backend:handle-overlapped f 7a763b 5576af0 io.windows.nt.backend:lookup-callback f 7bf6db 54bc9b0 kernel:throw f 622903 51f3430 READY .s ==== DATA STACK: "ERROR_TIMEOUT" f "no callback in io-hash" READY .r ==== RETAIN STACK: [ ] [ ] [ io.thread:io-thread syntax:t ] READY I swear! No alcohol or other drugs involved!! Stefan Scholl 2008-04-19T11:22:54 http://comments.gmane.org/gmane.comp.lang.factor.general/1342 Hi, Just a minor detail, the link to the factor repository in http://factorcode.org/getfactor.fhtml is not working. It directs to: http://factorcode.org:8812/responder/cgi/gitweb.cgi and I think it should go to: http://factorcode.org/responder/cgi/gitweb.cgi []s, Ricardo Boccato Alves. ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone Ricardo Boccato Alves 2008-04-16T21:56:54 http://comments.gmane.org/gmane.comp.lang.factor.general/1338 Hello, One of the onions in Factor world (to me anyway) has been the dilemma of finding the "one true effect". Even when you find the supposed "one true effect", there are still exceptional cases which require an accompanying shuffle word. Another dilemma has been finding a "grand unified theory of stack effects"; a sort of philosophy behind the effects which would inform the design of future words. I'm going a different route, embracing the diversity of effects instead of rejecting it. The way down this route is to give names to each variant. The following generic words work on sequences and tables (assocs): ---------------------------------------------------------------------- GENERIC: at ( col key -- val ) GENERIC: of ( key col -- val ) ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! GENERIC: grab ( col key -- col val ) ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! GENERIC: is ( col key val -- col ) GENERIC: as ( col val key -- col )! "Store value as key" ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! GENERIC: is-of ( key val col -- col )! "Key is value of this collection" GENERIC: as-of ( val key col -- col )! "Store val as key of this collection" ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! GENERIC: mutate-at ( col key val -- )! Mutate collection at key GENERIC: mutate-as ( col val key -- )! Mutate collection. Store val as key. ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! GENERIC: at-mutate ( key val col -- ) GENERIC: as-mutate ( val key col -- ) ---------------------------------------------------------------------- Those are available in 'extra/newfx'. I also have code to make those work on tuples: TUPLE: planet name radius solar-radius ; <planet> :name "Mars" is <planet> 100 :radius as 2000 :solar-radius <planet> is-of I haven't checked that in as it's even more experimental. There's a very common pattern; that of "dup foo>>", i.e. a dup followed by a tuple reader. This is captured by the word 'grab' above. I would really like to call this 'pick' but... Ed ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone Eduardo Cavazos 2008-04-15T09:00:29 http://comments.gmane.org/gmane.comp.lang.factor.general/1333 ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone_______________________________________________ Factor-talk mailing list Factor-talk-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f< at >public.gmane.org https://lists.sourceforge.net/lists/listinfo/factor-talk Nikhil Marathe 2008-04-14T07:56:33 Search the mailing list at Gmane query http://search.gmane.org/?group=$group=gmane.comp.lang.factor.general