World: r4wp
[#Red] Red language group
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Ladislav 25-Jan-2013 [5395] | I haven't been of much help to you yet. I even may have been "too loud" sometimes polluting this discussion with my preferences. What I want to say now, though, is that I consider it good to have more dialects of Rebol instead of having just a totally compatible copy, so, please, take that as an encouragement and appraisal of your work. |
DocKimbel 28-Jan-2013 [5396] | Thank you for your kind words Ladislav. |
GrahamC 28-Jan-2013 [5397] | Doc, would you update this page of yours http://www.red-lang.org/p/documentation.html to indicate that Red chat is occuring at http://chat.stackoverflow.com/rooms/291/rebol-and-red |
Arnold 29-Jan-2013 [5398x2] | The Rde presentation shows the use of the binary Red. In it shows how to compile to get a cgi and a dynamic library. Are these also implemented in the current compile scripts? In that case that holds a good argument to update the Redcompiler.r script. It needs some work anyhow I noticed, it is rather location dependent atm. |
Rde=Red | |
DocKimbel 29-Jan-2013 [5400x2] | Arnold: no, it's not implemented yet, it's a target. |
GrahamC: I will add to the Red web site only links to strictly Red-related communication channels. OTOH, I can tweet this link. | |
Bo 30-Jan-2013 [5402] | I'd like to know if it would be possible to use Red/System to implement a program to capture frames from a web cam on a Raspberry Pi? Or would this be better performed in another language? |
DocKimbel 30-Jan-2013 [5403] | I know that François Jouen is already using Red/System to make image capturing from multiple cameras on OS X. Also as a rule of thumb, everything that is doable in C can be also achieved in Red/System. |
Arnold 30-Jan-2013 [5404] | That it is a target I can see now I have viewed the presentation a second time. Do you have a faint idea of a timeline when various stages of Red could become part of the real world? So version 4 in april and the first binary Red in 2015? |
DocKimbel 30-Jan-2013 [5405x3] | Binary Red could be added in a few weeks (except for the interpreter with console which would need an additiion binary), we just need to encap all Red codebase files in one executable. |
For a complete single binary, we need Red to be self-hosted, so probably not before end of 2013. | |
additiion = additional | |
Kaj 30-Jan-2013 [5408] | The interpreter console is already a binary |
Bo 30-Jan-2013 [5409] | Thanks for the info. I have a 512MB RasPi and a 16GB SD card on my desk right now. I'm going to give it a shot soon. |
Rebolek 31-Jan-2013 [5410] | Can I pass function pointer as an argument to another function in Red/System? |
Kaj 31-Jan-2013 [5411x3] | Yes |
However, it's not yet supported for functions defined by #import, so if you need that, you have to write a wrapper function | |
Also, in some places you have to cast the function pointer to an integer to pass it | |
Rebolek 31-Jan-2013 [5414] | Ok, thanks. I unfortunatelly hadn't chance to check Red/System in last few months. I'm very glad it can be done, I have to find some time for Red/System again. |
Kaj 31-Jan-2013 [5415] | Since Red needed jump tables, you can also go the other way around, and cast an integer/pointer to a function, then call it |
Kaj 1-Feb-2013 [5416x2] | Here's the code for the Red GUI IDE: |
Red [] #include %GTK/GTK.red view/title [ text: area button "Do" [ unless any [ none? script: get-area-text text empty? script empty? code: load script unset? result: do code ][ prin "== " probe result ] ] button "View" [ all [ script: get-area-text text not empty? script not empty? code: load script view code ] ] button "Quit" close ] "Red GTK+ IDE" | |
DocKimbel 1-Feb-2013 [5418] | Nice! It's amazing how fast you came up with a VID-like dialect for Red. |
Kaj 1-Feb-2013 [5419x3] | Well, most of the work is in the Red/System layer that I did more than a year ago |
Same for the other bindings | |
Plus, when putting a Red layer on top of it, you're staying within Red and Red/System, so you're on known terrain. Starting a new binding in Red/System throws you into the abyss of the external library's C code, headers and idiosyncracies, and documentation that may or may not exist or be correct | |
GrahamC 1-Feb-2013 [5422] | What can you do for Android where this is no gtk? |
Kaj 1-Feb-2013 [5423] | It requires a completely extra set of bindings, including to the Java VM and the GUI. We're thinking about it |
Bo 4-Feb-2013 [5424] | OK. Say I have a fresh Windows PC and I want to start coding in Red/System for the target of Raspberry Pi. Help me understand what I need to do. Here is what I assume needs to be done, but I may be wrong. 1. Download R2, I assume. Any particular version? 2. Download Red/System compiler. From where? 3. Write the program on the PC. 4. Compile it with Red/System on the PC, but for the Raspberry Pi target. Is that just a setting somewhere? 5. Move the compiled file to the Raspberry Pi and execute it. |
Andreas 4-Feb-2013 [5425x2] | The following should have you covered: https://github.com/dockimbel/Red#readme |
Target for Raspberry Pi is "Linux-ARM". | |
Bo 4-Feb-2013 [5427] | That's exactly what I was looking for. It would be great if that was prominently linked from red-lang.org. :-) |
Kaj 4-Feb-2013 [5428] | It is |
Arnold 4-Feb-2013 [5429] | View for windows, there is a helper script redcompiler.r on rebol.org to facilitate (cross-)compiling |
DocKimbel 5-Feb-2013 [5430] | Last week Red presentation in The Netherlands, remastered by HostileFork: http://www.youtube.com/watch?v=JjPKj0_HBTY |
Arnold 5-Feb-2013 [5431x2] | Bas is still couching the presentation together :) |
coughing not couching ;) | |
Kaj 5-Feb-2013 [5433] | I implemented compose/deep. With the latest Red fixes, it works now |
Kaj 6-Feb-2013 [5434] | Is FOREVER not implemented in Red? |
Bo 6-Feb-2013 [5435x4] | If I wanted to access JPG pixel data in Red/System, is there an easy way to do that? |
As the youngsters say, EPIC! I just compiled and ran my first Red/System program on the Raspberry Pi running Arch Linux. | |
But I still want to figure out how to access JPG pixel data. :-) | |
Reading the Red/System Documentation on red-lang.org, I don't see any way to access files. IIRC, someone said that wasn't implemented yet? | |
Pekr 7-Feb-2013 [5439] | Bo - R/S is low level - mostly a wrapper to C to enable Red like syntax. It will not contain stuff to open files and do more advanced things imo, unless you link to some library and create a wrapper for such a purpose. I am too eagerly waiting for Red to get more advanced stuff. I think, that once Doc finishes the interpreter stuff ec., he is back to objects/ports, and then networking/files IO will come and more fun begins :-) |
DocKimbel 7-Feb-2013 [5440x2] | FOREVER: not yet supported by the compiler. |
mostly a wrapper to C Red/System doesn't wrap C, it replaces it. ;-) | |
Pekr 7-Feb-2013 [5442] | :-) |
Kaj 7-Feb-2013 [5443x2] | Congrats, Bo |
Feels good, doesn't it? :-) | |
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