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I vaguely remember writing Rolex: Unicode Enabled Lexer Generator in C#[^]
Well, I needed some code from it for Reggie[^] , which is a code generation tool that generates C# code to match strings using a non-backtracking Regex engine so it works over fast forward-only streams of any size (unlike .NETs) and it's faster than .NETs regex so it's really good for scraping data, and also good for validating that passed in strings match the expressions (for doing things like form field validation)
Anyway, I was ripping the code out of Rolex and I'm amazed at how clean it is despite its complexity.
I have this tool called deslang.exe that does most of the heavy lifting so it exports whole code blocks (written in C#, rendered in language independent code (vb/c#/etc) and macroizing them so it's simple to make all the classes, and heckin maintainable despite writing code in various languages. There's only one copy of the code templates to maintain and they are in C#. It all happens as part of the build process. Deslang is just a build tool that makes code macro magic.
I only kind of remember doing this. And yet I understand it after picking it up well after the fact. Win.
Plus the "FastFA" engine I made is just smart. I thought I ran into a bug with it, and I was terrified because it meant Rolex (long since released) was generating bad code, but nope. It was my present self using it wrong (silly mistake on my part, i was calling the wrong function). It's fast, to the point, and can render itself to pretty graphs for debugging purposes, so it was easy to find my mistake, and determine that it didn't come from this engine.
Clean. Clean. Clean. And solid. Very few comments because it doesn't need much.
This doesn't happen to me very often. I love this code.
It's nice to be able to wake up in the morning and dig through an old project and find everything works as expected.
It's not intended as a brag, I'm just.. I'm having a really good day so far. Everything I touch is gold apparently. I should buy a lotto ticket 
Real programmers use butterflies
modified 24-Oct-21 15:22pm.
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Good on ya
"I didn't mention the bats - he'd see them soon enough" - Hunter S Thompson - RIP
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honey the codewitch wrote: I should buy a lotto ticket
Do it, who knows...
M.D.V. 
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
Rating helpful answers is nice, but saying thanks can be even nicer.
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honey the codewitch wrote: I'm having a really good day so far
More to come 
"The only place where Success comes before Work is in the dictionary." Vidal Sassoon, 1928 - 2012
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If you do, watch the vid.
But be aware that the "F-word" appears on screen several times, because it was included in the game code comments - and I can understand why ... that's about the one time I'd let it pass in my code as well. 
Fast Inverse Square Root — A Quake III Algorithm - YouTube[^]
That is so obvious once you've seen it! (The vid deserves a like purely for the quality of the explanation.)
And a damn good introduction to IEEE 754 as well. 
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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I love this stuff.
Real programmers use butterflies
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Herself didn't understand why I was laughing out loud.
She really didn't understand when I explained what I was watching ("IEEE 759, the International Standard for floating point number representation in computers" and a "square root calculating function") and that I was laughing with joy.
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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That's probably the best explanation for that algorithm I've seen so far
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I loved that video, he should do more as he's very talented in explaining complex stuff.
GCS d--(d-) s-/++ a C++++ U+++ P- L+@ E-- W++ N+ o+ K- w+++ O? M-- V? PS+ PE- Y+ PGP t+ 5? X R+++ tv-- b+(+++) DI+++ D++ G e++ h--- r+++ y+++* Weapons extension: ma- k++ F+2 X
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It's just so rare to find anything on YT where the author knows what he's talking about, and can explain it so well.
He should do more.
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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I have a bunch of channels I love.
MVG - Modern Vintage Gamer usually speaks about homebrew / how console were cracked;
Coding Secrets is the channel of Sonic the Hedgehog programmer and explains how they did some "impossible" tricks on SEGA Genesis or PS1 hardware;
Dring 4 Answers taught me more about engines, cars, turbines than I could ever imagine;
Yarnhub, SimpleHistory and the Armchair Historian got me deeper into history than ever.
I also follow an unholy number of gun channels and a bunch of swordmanship / medieval weapons channels.
GCS d--(d-) s-/++ a C++++ U+++ P- L+@ E-- W++ N+ o+ K- w+++ O? M-- V? PS+ PE- Y+ PGP t+ 5? X R+++ tv-- b+(+++) DI+++ D++ G e++ h--- r+++ y+++* Weapons extension: ma- k++ F+2 X
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Have a look at ThisOldTony as well - he's an amateur metalworker who explains things really well.
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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I see we speak the same language
GCS d--(d-) s-/++ a C++++ U+++ P- L+@ E-- W++ N+ o+ K- w+++ O? M-- V? PS+ PE- Y+ PGP t+ 5? X R+++ tv-- b+(+++) DI+++ D++ G e++ h--- r+++ y+++* Weapons extension: ma- k++ F+2 X
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den2k88 wrote: I also follow an unholy number of gun channels and a bunch of swordmanship / medieval weapons channels.
And appear on sooooo many "antiterrorism lists" ...
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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I got used to that the day I looked for some fun takes on N*zi propaganda (i.e. the video of Born to be Alive with Mr. Moustache "dancing" to it) but of course YouTube collected it under N*zi videos.
Alongside black metal, swords, guns, explosives. So yeah, I am on at least a dozen no-fly lists.
GCS d--(d-) s-/++ a C++++ U+++ P- L+@ E-- W++ N+ o+ K- w+++ O? M-- V? PS+ PE- Y+ PGP t+ 5? X R+++ tv-- b+(+++) DI+++ D++ G e++ h--- r+++ y+++* Weapons extension: ma- k++ F+2 X
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Tom Scott's channel is highly recomended, esp if your a brit.
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I watch his videos occasionally, he's fine but a bit all over the place, I prefer very specific channels with in depth explanations. Though Tom Scott often piques my curiosity with interesting trivia.
GCS d--(d-) s-/++ a C++++ U+++ P- L+@ E-- W++ N+ o+ K- w+++ O? M-- V? PS+ PE- Y+ PGP t+ 5? X R+++ tv-- b+(+++) DI+++ D++ G e++ h--- r+++ y+++* Weapons extension: ma- k++ F+2 X
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If you like music, you should check out Rick Beato, especially the "what makes the song great" series.
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Check out bigclive - very good.
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As an ex-embedded engineer (retired now), I love bit twiddling and fast approximations. I never need this particular approximation but it's very clever and probably not something I'd ever figure out on my own.
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Interesting, but I have some doubts it is still relevant with modern compilers and CPUs. Even if it were, a simple lookup table would be faster for the purpose of finding the first estimation.
This algortihm reminds me a bit of Bresenham's line algorithm - Wikipedia[^] : extremely clever, but once it was hard-wired in every graphcs chip there was little point knowing about it. Except maybe to apply such principles to similar problems in other areas.
E. g. I tend to do calculations with 2D and 3D vectors a lot, and if I were to do these calculations straightforward, then yes, I'd need to do a lot of vector normalizations (i. e. calculations of 1/sqrt(x)). But in about 8-9 out of 10 cases I can avoid normalization alltogether by transforming the expressions. E. g. when I want to know whether a vector length is very small (effectively null), then I compare the squared length against the squared threshold value. Or when I calculate the intersection of a plane with a line, I determine the intersection without normalizing any vector. Instead I transform the equations in such a way that I end up with the squared length of the line direction vector, and the plane direction or normal vectors don't need to be normalized at all.
I do agree that the explanations and specifically the animated number representations are formidable, though
GOTOs are a bit like wire coat hangers: they tend to breed in the darkness, such that where there once were few, eventually there are many, and the program's architecture collapses beneath them. (Fran Poretto)
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Found this great tip in a Dutch computer magazine:
Quote: You might have some (network)devices that have leds on top to display their status, which might not be visible when tucked away somewhere. To make the leds better visible from a distance take the balls out of some deodorant rollers and place these on top of the led lights
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Or you might have one like my AC1750[^] that puts up a light show like a Christmas tree. The solution is a piece black electrical tape.
Come to think of it, deodorant balls and electrical tape might be, for light problems, what duct tape and WD40 are for mechanical design 
Mircea
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To put it in the words of CodeWraith:
Quote: May the duct tape be with you!
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