World: r3wp
[Core] Discuss core issues
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BrianH 14-May-2011 [1484] | Settable system-wide flags that affect MOLD are a bad idea, since they mean that you have to put wrapper code around every call to MOLD to make sure that it matches what your code expects. This makes very call to MOLD more complex and less task-safe. |
GrahamC 14-May-2011 [1485] | R2 has no tasks |
BrianH 14-May-2011 [1486x5] | Recursion-safe then, or async-safe, whatever. Yes, this includes system/options/decimal-digits. |
That is why there is a proposal for R3 to make all such options be specified at the point of call, not globally. Any global option like that would be protected from modification, or else it wouldn't be allowed. | |
This would mean that you would replace this code: saved: system/options/binary-base system/options/binary-base: 64 ; or 16, whatever output: mold data system/options/binary-base: saved with this: output: mold/with data [binary-base: 64] This saves code since you can't trust that any global option will remain even its default value without data flow analysis unless it's protected. | |
In any case, you were still leaving parts out of your date formatting. If you left it all in it would look like this: >> 15-may-2011/12:00:00.00 >> 15-May-2011/12:00:00.000000+00:00 | |
Sorry, I forgot 3 zeroes: 15-May-2011/12:00:00.000000000+00:00 | |
GrahamC 14-May-2011 [1491x3] | I'd prefer that |
I can always reduce the numbers for display | |
It's much more work to increase the numbers | |
BrianH 14-May-2011 [1494x3] | Not for source code output you wouldn't, especially since those extra zeroes don't add any information. It's no work at all to increase the numbers, since all of those zeroes are there in the original date value. So if need less flexible formatters, they're easy to write. |
What you want isn't MOLD, it's a different formatting function. MOLD is for REBOL source, not for S3. | |
If you do MOLD output and then reduce the number of zeroes output, it requires parsing MOLD's output. Working straight from date! values means no parsing required. | |
onetom 14-May-2011 [1497] | this who "binary" talk is quite fucked, btw. as if carl never worked w low-level stuff... but after seeing a whole nation (singaporeans) calling the desktop machine CPU, im not surprised... just disappointed.. wtf does binary-base mean? binary already means number-base 2... |
Gregg 15-May-2011 [1498x2] | if it's a date with no time portion, then date/date gives you an error. It works for me. Or maybe I'm doing it differently. A date! always has a time value, correct, though it may be none? And if it's none, that affects the default formatting. While I've had a few times that the trimming of zeros from time values annoyed me, it isn't high on my priority list. If I don't like REBOL's default format, or if I have to send data to another process, I just know I need to format it. |
The default format will never be right for all uses. | |
Maxim 15-May-2011 [1500] | and now that we have now/utc, a lot of the pain is gone, IMHO. |
GrahamC 15-May-2011 [1501x4] | Gregg ... now it doesn't give me an error! |
either Rebol is non-deterministic, or, I'm having a bad day | |
The issue is that web apis using different languages don't use datatypes in the same way. | |
I'd be okay if I only used Rebol web apis! | |
Geomol 15-May-2011 [1505x2] | Having QUOTE, would it be an idea to have CITE like this? cite: func ['word] [:word] Only difference, I think, is when passing any-function! types to it: >> type? quote next == action! >> type? cite next == word! All other types seem to return the same for QUOTE and CITE. |
Passing an unset word to QUOTE will return unset! in R2, and will return the word in R3. CITE returns the word. | |
Andreas 15-May-2011 [1507] | Graham, have a look at http://www.rebol.org/view-script.r?script=form-date.r |
BrianH 15-May-2011 [1508x2] | Geomol, in R2 when you pass a word to a get-word parameter, the value assigned to that word is passed instead. There may have been a good reason for this initially, but in the long run it turned out to be a bad design choice, and was fixed in R3. It has nothing to do with the any-function! types. |
There is a similar special case for when you pass a get-word value to a lit-word parameter, bot in R2 and R3. R2's APPLY function has code to undo these special cases, and R3's APPLY doesn't do the special evaluation; APPLY is used to break the evaluation rules, often for safety. | |
GrahamC 15-May-2011 [1510] | Didn't know about Chris' date formatting |
BrianH 15-May-2011 [1511] | Great work on that date formatting! I prefer compiled dialects over interpreted ones for volume work, but it's definitely the right idea :) |
Geomol 17-May-2011 [1512] | Tonight's Moment of REBOL Zen: How should R2 functions be categorized? They're not really functions with vars only temporarely on a stack: >> c: func [a b] [[a + b]] >> do c 1 2 == 3 but also not really closures with individual contexts: >> f: func [a] ['a] >> word1: f 1 == a >> word2: f 2 == a >> get word1 == 2 |
onetom 24-May-2011 [1513] | aaaw... ask/hide doesn't work if i start rebol with the -w option, which i might accept, IF there would be a way to start it without a clear screen... it doesn't integrate nicely with unix this way... |
Geomol 24-May-2011 [1514x2] | Yes, we had a discussion about this in the Core group recently. See posts around 13-May. |
Sorry, my last post here was an answer to something in the !REBOL3 group. | |
Geomol 26-May-2011 [1516] | FIRST, SECOND and THIRD can be used on functions like: >> first :repend == [series value /only] SECOND and THIRD returns the function body and spec. FIRST returns a stripped spec, just the arguments and refinements. I notice, it's produced each time contrary to the other two: >> same? second :repend second :repend == true >> same? third :repend third :repend == true >> same? first :repend first :repend == false What is FIRST on a function used for? It may be used internally, but does anybody use it externally? It seems more logical, if FIRST on a function returned the spec, SECOND the body, and nothing else. |
Ladislav 26-May-2011 [1517] | This is not a useful subject to discuss, due to the changes in R3 |
Geomol 26-May-2011 [1518] | I see, they're all produced each time in R3: >> same? reflect :repend 'spec reflect :repend 'spec == false Guess the R3 implementation is better in this case. |
Gabriele 26-May-2011 [1519] | Geomol, that's very useful if you want to count the number of arguments of a function etc. - think of it as a pre-parsed function spec. |
Geomol 26-May-2011 [1520] | Yes, I see the benefit. I was just wondering, if it was actually used. I guess, you used it somewhere? :) If used, would it be more logical to have FIRST return the spec, and THIRD return, what FIRST return today? Or am I missing some vital point? |
onetom 26-May-2011 [1521] | its a remove-each e spec-of fn [find type? e [string! block!]] |
Geomol 26-May-2011 [1522] | Looking at SPEC-OF, and another question pop up. Why isn't copy/deep the default for COPY? Wouldn't the world be much easier, if it was? |
Micha 26-May-2011 [1523x3] | I need some help My server has multiple ip. it is possible to select the ip address ? |
I want to download the page, and to do it from different ip | |
p: open tcp:// i: get-modes p 'interfaces probe i probe i [make object! [ name: "if16" addr: 91.121.*.* netmask: 255.255.255.0 broadcast: 91.121.*.* dest-addr: none flags: [broadcast multicast] ] make object! [ name: "lo0" addr: 127.0.0.1 netmask: 255.0.0.0 broadcast: none dest-addr: none flags: [multicast loopback] ] make object! [ name: "if16" addr: 188.165.*.* netmask: 255.255.255.255 broadcast: 188.165.*.* dest-addr: none flags: [broadcast multicast] ]] | |
onetom 26-May-2011 [1526] | wow, i didn't know u can do that! where is it documented? i just remeber get-modes in relation to setting binary mode for the console or parity and speed setting for the serial port... |
Micha 26-May-2011 [1527] | you can not just choose adress ip . I ask if there was any way . |
Dockimbel 26-May-2011 [1528] | AFAIK, there is no way to do that using REBOL ports. |
Micha 26-May-2011 [1529] | thanks |
Maxim 26-May-2011 [1530x2] | Geomol, using copy/deep by default would be extremely bad for speed and memory. in most of the processing, you don't need to copy the deep content of a block, but the wrapper block itself, so you change the order or filter it. IIRC using copy/deep also causes cyclical references to break-up so using it by default would be disastrous. just look at how often we really need to use copy/deep compared to not and you'll see that the current behaviour is much more useful. |
I wish compose/deep didn't copy/deep the whole block when it did its composing. I don't know how it is in R3, but in R2, to simply replace one value in tree, you have to copy the whole tree, which isn't very useful. | |
BrianH 26-May-2011 [1532] | You can do more exact selections of what you want to copy in R3 using COPY/types. |
Maxim 26-May-2011 [1533] | yep, in R3, the make/copy system was greatly improved. |
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