World: r3wp
[!REBOL3 Schemes] Implementors guide
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Andreas 19-Jan-2010 [1713] | OK, created an account. I'll simple add those links myself, then |
Carl 19-Jan-2010 [1714] | I tossed a few up just now. Go ahead and add or edit as needed. |
Graham 19-Jan-2010 [1715] | looks like we side tracked into a docbase update ... |
Andreas 19-Jan-2010 [1716] | Already debugging the IMAP thingie |
Carl 19-Jan-2010 [1717] | Not a sidetrack. See my note. This is an opportunity to check the docs against the code. |
Andreas 19-Jan-2010 [1718x2] | Ok, fixed the IMAP proto so that no timeout is needed anymore. Stumbled over what seems to be a bug in R3's USE, though: |
>> foo: func [] [use [] [return 42] 0] >> foo == 0 | |
Graham 19-Jan-2010 [1720] | Looks like this bug is what was causing me grief ... |
Andreas 19-Jan-2010 [1721] | Reported as bug#1436 |
Graham 19-Jan-2010 [1722x2] | Updated to 0.0.4 working http://rebol.wik.is/Rebol3/Schemes/Imap4 |
There's some optimizing of parsing the input and checking for incomplete data returned on a read to be done. | |
Graham 20-Jan-2010 [1724] | I've updated it to v 0.0.5 which hopefully checks now for incomplete read data, and factors out some of the parsing |
Pekr 20-Jan-2010 [1725] | Back to separate buffers - just a note. I think that we eventually don't need them. But we should be carefull to user errors. Because with one shared buffer, if you write to it, before you read-out all incoming data, you just destroyed a data. And what if you don't need to act on the data yet? You will temporarily store it in some other storage (buffer) anyway. But I never wrote a scheme, so maybe this is just plain theory, and in fact having one buffer will not cause any problems to anyone ... |
Graham 20-Jan-2010 [1726x2] | well, I think you normally read the data and then decide what to do with it. So, you have saved it somewhere ... |
Anyway I haven't had any issues so far .. and users unless they are writing schemes won't either. | |
Pekr 20-Jan-2010 [1728x2] | I mean - what if data comes, but you don't want/need to react on it, but you need to write? You have to read-out the buffer first, before you write, no? This constant small chunk read/wirte could cause unnecessary overhead, or not? |
Anyway - good to know, there is still some secret mode to reveal :-) So maybe one day Carl describes how to utilise two separate buffers :-) | |
Graham 20-Jan-2010 [1730] | I think it would be good if people actually tested the schemes! |
Pekr 20-Jan-2010 [1731] | OK, I will do few tests with my FTP Linux server, during the evening ... |
Graham 20-Jan-2010 [1732x4] | It would be good to get these all tested and written to a usable level while the code is still fresh, and while the spirit is willing ... |
Of course, Carl's code review may change all of that ... | |
With the latest code I got an error before the lookup event connecting to imap.aim.com and then it was ok. Odd. | |
got an error event before the lookup event | |
Pekr 20-Jan-2010 [1736] | Carl is going to review the code? What's going to be the outcome? Full rewrite? Or just some methodology/aproach suggestions? |
Rebolek 20-Jan-2010 [1737] | I think that depends on the review :) |
Graham 20-Jan-2010 [1738] | Right, that was the plan ..to get Carl to review schemes and advise on a "best" practice. |
Maxim 20-Jan-2010 [1739] | Carl is usually responsive when you give him something to look at. if all he has to do is direct users into improving code, his intellect is much more usefull than if he is occupied hammering code out and sifting thru tedious RFCs. |
Graham 20-Jan-2010 [1740x2] | I've got this in my network code .. ;find/part msg join generator " OK" 8 join generator " OK" = copy/part msg 8 and can't figure out why the first line does not work but the second does .... |
Somewhere I came across a document that showed how 'open, 'read etc would search the schemes to invoke the correct actor. Anyone know the link? | |
Steeve 21-Jan-2010 [1742x2] | weird, I thought exactly the opposite. Why the second case is working ? Should be: (join generator " OK") = copy/part msg 8 |
For the firt case, i'd rather prefer. >> find/match msg join generator " OK" | |
Graham 21-Jan-2010 [1744x3] | hmm.. I didn't need the ( ) |
I use find/part because I want to match at the start of the line | |
of the series | |
Steeve 21-Jan-2010 [1747] | Then, use find/match But using Parse is better to my mind (less memory overhead) >> parse msg [generator " OK" to end] |
Graham 21-Jan-2010 [1748x2] | True ... but still there's a bug in find/part |
Isn't there some new way to return true from parse without the "to end" now? | |
Steeve 21-Jan-2010 [1750] | (break/return true) but i don't know if it's faster |
Graham 21-Jan-2010 [1751] | Yeah .. that's what I was thinking of |
Steeve 21-Jan-2010 [1752x2] | but you must have a loop |
>> loop 1 [parse msg [generator " OK" (break/return true)]] | |
Graham 21-Jan-2010 [1754] | compose [ (generator) ... |
Steeve 21-Jan-2010 [1755] | with a sub-rule... >> match: [(break/return true)] >> loop 1 [parse msg [generator " OK" match]] |
Graham 21-Jan-2010 [1756] | why the parens in your sub rule? |
Steeve 21-Jan-2010 [1757] | because break is not a part of the parse dialect. It's a regular function |
Graham 21-Jan-2010 [1758x2] | ahh... not thinking |
just looking ... break does appear in the new parse dialect | |
Steeve 21-Jan-2010 [1760] | but not break/return |
BrianH 21-Jan-2010 [1761] | And in the R2 parse dialect, but the meaning in both cases is different from the function. |
Graham 21-Jan-2010 [1762] | brianh, what's causing the find/part error? |
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