World: r3wp
[Core] Discuss core issues
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Henrik 28-Jul-2007 [8553] | geomol, probably a different word in this context for "not invented here" |
btiffin 28-Jul-2007 [8554] | Umm, I think it means they don't get a chance to overthink the problem. Now to be honest, large projects do need a good work breakdown and management back end, but the coding usually ends up far too complicated to ever get off the ground (in my somewhat limited experience - I only watched them fail 5 times so far). And polyFORTH keeps chugging along... and again in a little defense of corporate...they have very few L33t's that can handle poly. |
Geomol 28-Jul-2007 [8555] | I think, you're ok with in general calling the authors of REBOL programs/scripts for "REBOL programmers" or "REBOL developers". In most cases it's more correct than the term "script writer", as I see it. |
btiffin 28-Jul-2007 [8556x2] | Fair enough. I'll avoid the expression in the library docs. |
Ok, next one. I'm thinking about quit/halt. If a script is started from the console with do, it should halt to the console right? If started from an icon click or a shell command it should quit? Or do people mind just restarting up another REBOL console when an app quits on them? Or other way round, an app started with an icon click should never halt, correct? | |
Geomol 28-Jul-2007 [8558] | Started from console, and it should just halt. I get this wrong sometimes myself. It could be good to have an equal way of doing this, so please tell me, when you find a good way! Standards! (It should also work equally on all version of REBOL on all platforms.) |
btiffin 28-Jul-2007 [8559x2] | I'm using system/options/script - it is only set if a script is started up along with REBOL. I was thinking of posting a cease idiom. It is kind of a pain to do a script that quits, but on the other hand, I don't think that in the general case, a script started from an icon should ever halt, so quit seems to be a better 'default'. |
Inconvenience to coders doing console work but safer for users running scripts. | |
Geomol 28-Jul-2007 [8561] | Would it work, if scripts always use QUIT, and then when in a console, we redefine QUIT like: >> quit: :halt |
btiffin 28-Jul-2007 [8562] | I like that idea. %user.r could check if system/options/script is set (maybe). |
Geomol 28-Jul-2007 [8563] | HALT is then only used in situations, where scripts should return to the console, nomatter if it was started from the console or the desktop. |
btiffin 28-Jul-2007 [8564] | I'd buy into that. Now can someone wield a big enough stick? :) |
Henrik 28-Jul-2007 [8565] | what is the official definition of an action! ? I keep forgetting the difference between actions and natives. |
Geomol 28-Jul-2007 [8566] | If I remember correctly, an action is some kind of a wrapper, that can handle different datatypes. In practise, they work like a native. |
Henrik 28-Jul-2007 [8567] | for the user, it has no meaning to know the difference between natives and actions? |
Geomol 28-Jul-2007 [8568x2] | I don't think so. Someone explained actions in here some time ago, I think. |
I found this quote: "action values are native code, just invoked through type-specific indirection" | |
Henrik 28-Jul-2007 [8570] | mmm... okay :-) |
Geomol 28-Jul-2007 [8571] | Let's take an example. ADD is an action! It can be used with many datatypes. Two of them: >> add 1 2 == 3 >> add 1 2x3 == 3x4 So ADD is probably an action because of the way, it's internally written. I've found, that many actions have to do with numbers. Try: >> ? action! |
Henrik 28-Jul-2007 [8572] | yes, a lot of them also has "Returns TRUE..." in their help text |
Geomol 28-Jul-2007 [8573x2] | I don't think, the programmers have to worry about actions, and therefore you can say, they're confusing. Calling them all natives would be ok with me. |
Most (all?) of the ones returning TRUE is the "...?" words. Then it might be strange, why not all "...?" words are actions. See: >> ? "?" | |
Henrik 28-Jul-2007 [8575] | well, value? is a native, because it only accepts word! ? |
Geomol 28-Jul-2007 [8576x2] | That some of them are functions can be explained (they're mezzanines). But some of them are natives, which is strange to me. |
input? is also a native. | |
Henrik 28-Jul-2007 [8578] | hmm.. script accepts multiple datatypes. I don't think it's about that. It's probably only about how it's implemented internally. |
Geomol 28-Jul-2007 [8579] | Can you find an action, that only take one type of data? :-) |
Henrik 28-Jul-2007 [8580x3] | the full quote from earlier: action values are native code, just invoked through type-specific indirection. APPEND would likely be an action value because its implementation would be different for each type you are appending to. |
I think it's purely an implementation issue. If APPEND in R3 was a native rather than an action, it would not be able to use as many types as arguments as it does. | |
and APPEND in R3 is an action, so Brian is right there. | |
Gabriele 28-Jul-2007 [8583x3] | LOL, so it's me that defines whether rebols are "programmers" or not? :) |
indeed, difference between native and action is how it is implemented. | |
actions are implemented as "methods" for the datatypes. natives are more like normal C functions. | |
Henrik 28-Jul-2007 [8586] | I'll write that in my blog post :-) |
btiffin 28-Jul-2007 [8587x2] | Has anyone ever written a version of clean-script.r that will (attempt to) pretty print at email safe 80 column limits? |
Geomol; The quit: :halt works...as long as you are used to typing "q" to leave the console. Otherwise you get stuck trying to actually quit. I think there is more thinking... | |
btiffin 29-Jul-2007 [8589x2] | Ok...is there a function that emulates the behaviour of flowing through a script? Outter.r rebol [] while [true] [print "calling inner" do %inner.r print "called inner"] Inner.r rebol [] if confirm "Quit? " [quit] if confirm "Halt? " [halt] if confirm "Break? " [break/return 10] print "Bottom of inner" The only way I can get outter.r to continue the while loop is by answering No to all the prompts and flowing through. I'm questing for a way to get out of a do'ed script without breaking outter and recoding the whole inner script to have it flow through. I'd like to be able to use do and not launch or call. |
Thanks gentlemen; Found a solution. catch and throw. outter.r while [true] [print "doing inner" catch [do %inner.r] print "done inner"] inner.r rebol[] if confirm "Throw? " [throw "some value"] print "Bottom of inner" And with /name, why I think I'll write spaghetti.r Just kidding. rebols don't cook spaghetti. | |
Gregg 29-Jul-2007 [8591] | I don't know of a width-limited formatter, but it would be a good thing to have. |
btiffin 29-Jul-2007 [8592] | Gregg; I started mucking with it. The first blaring implication is splitting comments...it means actually modifiying the source. |
Gregg 29-Jul-2007 [8593] | Yes, that's the first problem I see as well. |
Henrik 31-Jul-2007 [8594] | when doing a read/part http://www.somewhere.com500 does it really only read the first 500 bytes, or does the server deliver everything and REBOL just cuts it down to 500 bytes client side? it seems to take an equal amount of time to read 500 bytes and 100 kb. |
Graham 31-Jul-2007 [8595] | it reads everything |
Pekr 31-Jul-2007 [8596] | really? What is that refinement there for then? :-) Well, it might be understandable - read in opposite to open just can't be so fine-grained ... |
Henrik 31-Jul-2007 [8597] | it probably depends on the webserver, if it will deliver only part of the page or not. |
Pekr 31-Jul-2007 [8598] | IIRC I tested open/part and skip and it worked, but it was long time ago ... |
Gabriele 31-Jul-2007 [8599] | R2's HTTP does not support that kind of things. |
Geomol 1-Aug-2007 [8600] | I'm so irritating happy today! :-D (You may not be able to say such in english, but it works in danish.) |
Henrik 1-Aug-2007 [8601] | it does? :-D |
Geomol 1-Aug-2007 [8602] | Ops, wrong channel, that should have been in the "Chat" group. |
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