| --- Log opened Sun Jan 17 00:00:10 2021 |
| 00:03 | < john_cephalopoda> | That's the Forth stuff I'm working on: https://codeberg.org/jmf/impexus |
| 00:04 | <&McMartin> | Aha, I see |
| 00:04 | < john_cephalopoda> | Not many commits since I am spending most of the development time thinking about improvements to my architecture that ultimately don't work out at all. |
| 00:04 | <&McMartin> | Yeah, I think if I were going ot push one of my long-dead projects I'd try to get some of my old projects ported out of GameMaker into something that ran directly on desktops |
| 00:05 | <&McMartin> | The immediate one though is to take that project I linked, or more specifically my 8-bit demake of it, and port it to a different platform with the same CPU as a proof-of-concept of how you do modularization with no tools |
| 00:07 | < john_cephalopoda> | It's getting a bit late here, gonna head to bed. I'll have to free the sidewalk from snow tomorrow morning :þ |
| 00:07 | <&McMartin> | Oof. |
| 00:07 | <&McMartin> | Good luck! |
| 00:07 | < john_cephalopoda> | Thanks! |
| 00:07 | < john_cephalopoda> | The blog entry looks interesting, I'll read it tomorrow. See you! |
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| 00:16 | <&McMartin> | Oh hm, I should probably actually tie the simulated evolution program back into the DX9 nonsense I did later. |
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| 01:48 | <&ToxicFrog> | I've been gnawing on Forth and this has reminded me that in at least some traditional Forths the basic condition structure is: |
| 01:48 | <&ToxicFrog> | cond IF true-branch ELSE false-branch THEN |
| 01:48 | <&ToxicFrog> | Which is extremely gross, especially if you come from postscript |
| 01:52 | <~Vornicus> | i forgot what postscript's looks like |
| 01:54 | <~Vornicus> | oh, cond {true-branch} {false-branch} ifelse, much shorter |
| 01:54 | <~Vornicus> | does forth have the delayed execution of postscript? |
| 01:54 | <~Vornicus> | ...I should have gone to bed |
| 01:54 | <&McMartin> | I think that's "hand it a word to call later" |
| 01:55 | <~Vornicus> | if not then it might be that this construct is necessary because otherwise it'd start doing the true stuff before figuring out it needs to not |
| 01:56 | <&McMartin> | Oh. Yeah, that's why; THEN is the terminator on searches. |
| 01:57 | <&McMartin> | Because it lexes forwards from IF, IIRC. |
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| 01:57 | <&McMartin> | And THEN always exists but ELSE might not |
| 02:00 | <&ToxicFrog> | Yeah, IF is immediate and scans forwards to find the THEN (and ELSE, if present) |
| 02:00 | <&McMartin> | And that means it's not using stored words, which would, I think, do what the { } are in the postscript? |
| 02:01 | <&McMartin> | I recall Forth relying more on "scan ahead for terminator keyword" and less "here is a single unit of execution, save it for later" |
| 02:01 | <&ToxicFrog> | But it's a weird special case¹ that doesn't sit well with me, since it inverts the usual structure of forth code; I find Postscript's "code on the stack first, then control flow that uses that code" design a lot more elegant (and this heavily informed the design of my AVR not-quite-a-forth) |
| 02:01 | <&ToxicFrog> | ¹ yes I know immediate words are a general purpose mechanism, but you get the idea |
| 02:01 | <&ToxicFrog> | Yes. |
| 02:03 | <&ToxicFrog> | The notforth-avr equivalent is that { is a word that pushes a marker and then puts the lexer into read-and-push rather than read-and-execute mode, and } is an immediate that scans backwards to the marker, compiles everything it found, writes that to an anonymous code buffer, and pushes the address of that buffer |
| 02:03 | <&ToxicFrog> | You can then use it as an anonymous function (with if, and so forth) or use def to associate it with a name. |
| 02:05 | <&ToxicFrog> | Which is very close to how postscript does it -- {...} is an executable code block that can be bound or called. |
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| 03:04 | <&[R]> | DAY = 1000 * 60 * 60 * 24; e = new Date; d = new Date(new Date(e.getFullYear(), e.getMonth(), e.getDate(), 12, 0) - DAY * 20); for (let x = 8, a = null; x > 0;) { if (!d.getDay()) { if (a) { console.log(a.join(' ')) } a = []; --x } if (a) { a.push(d.getDate() > 9 ? d.getDate() : '0' + d.getDate()) } d = new Date(d - -DAY) } |
| 03:04 | <&[R]> | Woo! |
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| 09:03 | < john_cephalopoda> | Morning |
| 09:07 | <&McMartin> | Good morning. Just in time for me to crash out to sleep. |
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| 09:28 | < john_cephalopoda> | McMartin: I just finished reading your simEvo article. Cool stuff. |
| 09:32 | < john_cephalopoda> | Some time ago I found this particle life simulator, which works pretty well: https://github.com/HackerPoet/Particle-Life |
| 09:34 | < john_cephalopoda> | There's no makefile but "g++ *.cpp -lsfml-graphics -lsfml-window -lsfml-system -o plife" should do. |
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| 17:06 | < john_cephalopoda> | Hm, setting up cross-compilation toolchains is always such a hassle. |
| 17:13 | < john_cephalopoda> | Oh, looks like I don't need one, just misinterpreted the docs. |
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| --- Log closed Mon Jan 18 00:00:12 2021 |