World: r3wp
[Core] Discuss core issues
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Graham 9-Dec-2005 [2916] | try the nntp scheme. |
Davide 9-Dec-2005 [2917] | I'm already using nntp scheme, but it become slow because it reads first all message id from the group in port/locals/message-block In large groups accessing the msgs list is very slow as you can see here: http://www.ddmind.com/modules.php?name=gdp_rforum&ng=it.sport.calcio.milan (works only in IE :-)) |
Izkata 9-Dec-2005 [2918] | >> p: open/lines tcp://news.aioe.org:119 >> first p == {200 aioe.org InterNetNews NNRP server INN 2.4.3 (20050923 snapshot) ready (posting ok).} >> insert p "LIST^/" ;;note the newline >> first p == {215 Newsgroups in form "group high low flags".} Don't ask me why - I don't think it should need it, either... |
Graham 9-Dec-2005 [2919] | because you've used open/lines ... |
Davide 9-Dec-2005 [2920x2] | Here, using newline does not work, it works only using no-wait refinement: REBOL [] p: open/lines/no-wait tcp://news.aioe.org:119 wait p print copy p insert p "GROUP it.test" wait p print copy p |
I remember that insert func is syncronous when used in a port opened without no-wait refinement. Time to read again the core manual :-) . Thanks anyway | |
Graham 11-Dec-2005 [2922] | Has anyone done anything in the way of a reporting dialect ( that gets converted to sql and executed ) ? |
Graham 12-Dec-2005 [2923] | I'm thinking of allowing the program to execute rebol sql dialect as is .. except I would prevent actions such as alter, drop, delete, insert .. ie. only allow selects. Any danger in that? I don't think it contravenes the license ... |
Rebolek 12-Dec-2005 [2924] | Because I'm writing scripts on more than one computer I need to sync files somehow. I can use flashdisk for synchronization, but USB is not always available or I forget my flashdisk at home, so it's not always the right option. Or I can use ftp to upload and download files. But at the end I've got lots of different directories with different versions, because I have no intelligent file structure. I was inspired by Google filesystems for win and lin so I decided to use some freemail (gmail preferably) for my scripts maintaing. Unfortunatly, Gmail needs some authentication, SSL or what and SSL under Rebol needs Command and Command needs 350$ to buy. So I found another freemail provider that offers both non-authenticated SMPT and POP and therefore is OK for REBOL (btw. remeber the old REBOL example? send [luke-:-rebol-:-com] read http://www.rebol.com? Hard to do with all the authetications required today.) and I started coding. The result is a small application called %rspace.r that can upload file to repository, download newest version from repository, or you can get list of all files in repository and finally, if you're happy with your script, you can publish it on www/ftp. All this with documentation in less than 6kB. All you need is REBOL and mail account cappable of SMTP/POP without authentication. It's good to have an FTP account for publishing files but that's not required. If you do not have an mail account, I've set up one on seznam.cz, user 'rebolspace' and pass 'spacerebol' for testing this application (it's built in, so you can start testing right after download). Remember, it's just alpha, does not have many features, but it works, I can write something here, update it there and have all the versions accesible from everywhere. It's written for REBOL scripts so with big projects it's going to be very slow and unusable, but for small project (and most REBOL scripts are really small) it's probably good. So download it form http://krutek.info/rebol/rspace.r(stable) or http://rebolspace.sweb.cz/rspace.r(latest published version). WARNING: because [rebolspace-:-seznam-:-cz] is open account it won't be wise to use it ordinarily. Please, if you like it, set up your own account and use it instead of built-in one. And remember: all suggestions and fixes are welcome. |
MichaelB 12-Dec-2005 [2925] | find-deep: func [b [block!] o [any-type!]][ forall b [ either block? b/1 [return find-deep b/1 o][if b/1 = o [return b]] ] none ] z: find-deep [a b [c d [e] f]] 'e probe z Has somebody an idea why this is not working ? Find-deep is always return none, even though it finds the e in the inner block. Upon debugging the 'e is found and the inner block returned, but then one level up in the recursion only a none reaches the 'return after the find-deep invocation. Maybe I'm missing something very simple ? |
Volker 12-Dec-2005 [2926] | Could forall have a bug with return? IIRC some versions had one. then the 'forall traps the return. |
MichaelB 12-Dec-2005 [2927] | this might be, as I really was trying to find a mistake, but it didn't make sense |
Volker 12-Dec-2005 [2928] | 1.3.2.4.2 returns "[e]" |
MichaelB 12-Dec-2005 [2929x2] | ok thanks, I gonna try it |
1.3.61.3.1 didn't work, but the new official releases did | |
Volker 12-Dec-2005 [2931] | in such cases, try to print something between the forall and the none. I uess you will see that output multiple times. |
MichaelB 12-Dec-2005 [2932] | 2.6.50.3.1 also didn't work .... I have to be more careful with the different versions I guess |
Volker 12-Dec-2005 [2933x2] | forall: func [ "Evaluates a block for every value in a series." [catch throw] 'word [word!] {Word set to each position in series and changed as a result} body [block!] "Block to evaluate each time" ][ throw-on-error [forskip :word 1 body] ] |
http://www.rebol.net/cgi-bin/rambo.r?sort=1&limit=1&cmd=Search&id=&pattern=forall | |
MichaelB 12-Dec-2005 [2935] | you're right the versions differ pretty much when doing a 'source on 'forall |
Henrik 12-Dec-2005 [2936] | 1.3.61 and 2.6.50 is somewhat older than 1.3.2. I think there are quite a lot of bugfixes in 1.3.2... |
MichaelB 12-Dec-2005 [2937] | Yes, I'm right now just a little bit confused with the numbers anyway. I have to sets of icons, alphas and official and used the alphas for testing funcs and the like and thought they're at least as new/fixed as the official releases, but maybe my alpha isn't completely up-to-date either. |
DideC 12-Dec-2005 [2938] | See http://www.rebol.net/cgi-bin/rambo.r?id=3925& |
Volker 12-Dec-2005 [2939] | currently 1.3.2 is the newest version. but because no rebcode it gets a 0.0.-59 added. |
Anton 13-Dec-2005 [2940] | Yes, FORALL was modified very recently, and the return was a bug. |
MichaelB 13-Dec-2005 [2941] | can somebody give me a quick rule, why the pick-path notation evaluates it's picked value and pick does not (and first...) (as it should be a shorthand for pick) as in: bl: [] append bl func [a][print a] bl/1 "hello" ;evaluates the function pick bl 1 "hello" first bl "hello" ; both do not I have to do an extra 'do - I'm just curious for a reason ?! |
Geomol 13-Dec-2005 [2942] | The explanation might be, that it should be possible to get the function without evaluating it. You can do that with PICK or FIRST: f: pick bl 1 f: first bl Now if bl/1 worked the same way, you always had to add DO to get it evaluated. So my guess is, Carl desided, that wouldn't be too smart, and I agree. It's the same with objects. To call a method (a function) within an object, you just write: o/some-func No DO is needed in front of that. So using path notation to get to a function within a block or an object will evaluate the function. |
Volker 13-Dec-2005 [2943x3] | Functions in paths must be executed because of objects. Pick is used for data, evaluating there would lead to surprises. |
Also in rebol some things do nearly the same, but not straight. So one can made an implicit choice. I guess that is by intention. For example, out of range: "pick s 1" returns none, 'first throws error. Or deep copy/make: blocks are copied, objects are not. | |
straight -> fully | |
MichaelB 14-Dec-2005 [2946] | Thanks for the answers. Maybe this should be noted somewhere especially - when I was searching for it, the only thing I found is in the documentation in the examples for unnamed functions. There only the path notation was used to extract and evaluate the functions immediately. I agree that this evaluation is good to have and on purpose, just a bit too hidden for my taste (one again has to have quite some undestanding how Rebol works to have a resonable model for these things or a big memory) - as some other things in Rebol. |
Ladislav 14-Dec-2005 [2947] | my Series article: http://en.wikibooks.org/wiki/REBOL_Programming/Language_Features/Series mentions this for quite some time |
MichaelB 14-Dec-2005 [2948] | :-) I didn't remember this - I guess my brain-capacity is too small. ;-) |
Ladislav 14-Dec-2005 [2949] | I don't think so |
MichaelB 14-Dec-2005 [2950x2] | and I hope so :-) |
I actually really think, that one of the problems Rebol has, especially for beginners and people from other languages, is that it's hard to have a small model in the head of how things work and why, so that out of a small amount of knowledge most stuff can be infered, at least sometimes it's not too consistent. (I know belongs a bit into the steep vs. shallow vs. deep learning curve topic) | |
Geomol 14-Dec-2005 [2952x2] | Research suggest, that intelligence and memory are mutual exclusive. If you remember too much, it'll have a bad influence on your intelligence. On the other way, the ability to forget information will mean higher IQ. This is in agreement with, how Claude Shannon defined informatin in 1948 at Bell laboratories. The trick is to remember only the absolutely crucial information and forget the rest. ;-) |
informatin = information | |
MichaelB 14-Dec-2005 [2954] | Was it always like that, that make object! 'block didn't copy the block before and that one get's the real block used for creation also via third 'object ? I was a little bit surprised to be able to change the binding of the words in an object after creation - I thought this is not possible with objects - now if we only could extend objects ... |
Henrik 14-Dec-2005 [2955] | extend? |
MichaelB 14-Dec-2005 [2956] | I mean extend an object after creation |
Henrik 14-Dec-2005 [2957] | as in new-obj: make old-obj [newstuff] ? |
MichaelB 14-Dec-2005 [2958x2] | no, without creating a new one, just like append third 'object [x: 'new-value] |
aka extending an existing context | |
Henrik 14-Dec-2005 [2960] | don't know if that is possible... |
MichaelB 14-Dec-2005 [2961] | unfortunately not - but anyway it's nice to be able to rebind the words in an objects context |
Henrik 14-Dec-2005 [2962] | michaelB, see latest blog entry |
MichaelB 14-Dec-2005 [2963] | yes I'm pretty surprised :-) (of course in a positive way) |
Ladislav 15-Dec-2005 [2964] | any notes on this?: >> trim/tail/with "0100" "0" ** Script Error: Invalid path value: with ** Near: trim/tail/with "0100" "0" |
sqlab 15-Dec-2005 [2965] | I found that many times annoying, but it reflects the description.( /tail and /all are mutually exclusive. |
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