Roblox Creates React In Lua 

Congrats man cool kid

Beautiful story, besides I don't like giving kids under 6 any smartphones or tablets to play with.

epic, little chad in the making

@@thingsiplaythats why ur kid aint going places

@@stxnw You have no idea what you are talking about.

Luau is great, I’ve written tools for Unreal Engine that help integrate gameplay elements into lua for easier user generated content, their type system is more then enough for 99% of use cases

the only reason I'm still not using luau in my stuff is that it lacks jit

@@v0xl it actually does have something like jit that they're calling native codegen. From my tests, its performance lands about in the middle between lua and luajit. It does especially good if there is a lot of math involved. The native codegen feature is still pretty new though and they've just started using type info for optimizations so I imagine it'll get a lot faster.

BRAZIL MENTIONED BRAZIL MENTIONED

LUINHA DO MEU CORASSEUN

brazil tangentially mentioned

GO MENTIONED

I feel you bro, the current option is to use waydroid the gapps ofc to not suffer from binary types. But still pc specific games are blocked

Who is playing roblox on Linux?

@jaydeep-p not sure, there are some people on reddit talking about this. But I don't play on linux

@@jaydeep-p I used to play occasionally

Not undefined. It only counts things in the array portion. It uses a binary search, that is why it messes up at non sequential indices

@@marcusly3497 Apparently this has been better defined since older lua versions; but according to the lua 5.4 Reference Manual Section 3.4.7 (I'd put a link, but RU-vid): "The length operator applied on a table returns a border in that table... a border is any positive integer index present in the table that is followed by an absent index, plus two limit cases: zero, when index 1 is absent; and the maximum value for an integer, when that index is present. Note that keys that are not positive integers do not interfere with borders... When t is not a sequence, #t can return any of its borders. (The exact one depends on details of the internal representation of the table, which in turn can depend on how the table was populated and the memory addresses of its non-numeric keys.)" So, while non-integer keys no longer produce undefined results, when your table has a hole, any one of the values followed by nil are legally allowed to be returned by the length operator. The "array section" and "hash section" are implementation details and are *not* present in the specification.

This has to be the worst single feature I've ever seen in any non-joke language

ive seen this in some of our production code at work but I've never had to work with it. lua really is a great embedded scripting language.

Who?

@@JanJozefo put headphones on, and you'll hear a cricket sound in the background

​@@frost54311 lmao I hear it now. I always listen to these on my phone's speakers

Would be even better if they had both Strings and Symbols.

do remember to remember what things are references and which are values and ints silently floatify if you're not careful those got my noob bottoms in trouble a few times, but it does pack a lot of power in little syntax!

sorry, but after reading the lua book for 5.3, I have to say it will take me much longer to become proficient in lua. Its not quite as simple as it seems.

@@bullpup1337 For proficiency with just using lua you only need Chapter 3 of the book + reference for any libraries you are using. I agree that if you want to write lua modules in c it does take some time as each version of the lua API has its own subtleties.

@@griffitaj We might be talking about a different book, I mean programming in lua by the inventor (ierusalimschy). Just finished chapter 18 on generators and iterators, and I have not even gotten to coroutines yet. There is a lot more than I thought to the language.

WHY NOT TCL? IT IS A THOUSAND BILLION TIMES EASIER!

@@jboss1073 That was sarcasm, right? … Right?

@@criptych It depends. Is it possible to take simplifying lessons from Tcl and apply them to the web? The skill level of current programmers who build frameworks seems to suggest otherwise. If it is truly impossible to simply the web as much as Tcl simplified Desktop GUI - if you're telling me Tcl is a one-in-a-quadrillion event in humanity and we will never ever again simplify GUIs as much as Tcl did, then I guess you can take it as sarcasm. Boy, how special Tcl is...

​​@@jboss1073 as much as I love Tcl and I use it for everything that requires quick GUIs and scripts... The team *really* has to get a better theme for Unix. And a lot of tooling to at least try and convince people to give it a shot. It is a great language buried in obscurity (unless you work in EDA or use Expect or Tkinter) Sidenote: it should be possible to straight up port Tk to the web (after all, we can use Emscripten and have the entire language run in the browser, which is lightweight enough to be viable)

actually all game logic is written in lua. Both UI and and game logic

i read that as cursed titties

They are the one that made the annotations, but I think the type system is being completely rewritten (and still probably will be too weak to document the cc tweaked api lol)

it is but in all honesty lua 5.1 or luajit are enough and is what is usually used in most projects

roblox forked their own version of lua and is updating that, it's called luau

Lua 5.1 was (and still is) the most popular version due all its features and still being really simple, also when LuaJIT was developed, it was based on Lua 5.1 and still is. There's Lua 5.4.6 which release data was 2023-05-02 (in the official Lua website), but people use version 5.1 a lot also to not break compatibility in some cases

lua5.4 exists but lua5.1 and luajit are the most popular versions luajit is based off lua5.1 and includes minor improvements from versions in the future

use luajit it's the better version for me

idk that is not really a bypass, you can just use a for loop instead, but in the end imo it does not really matter anyway. I don't think I have ever used mixed dictionary and array in lua

@@hallo7053yeah, the most mixing I have ever done would maybe be string | table or false | something

Stop repeating TJ's nonsense. An "index" doesn't start at 1. An index, in sane programming languages, starts at zero. The difference is not between "indexing" and "subscripting", because those are the exact same thing; the difference is between "indexing" and "counting". Tl;dr it _is_ 1-based indexing.

Both repos' github stars have doubled/tripled *already*, I don't know what arc this is starting but the part of my brain that has been interested in react-lua since 2021 couldn't be more hyped

Well actually it already happened since roblox uses their own modified version of lua called luau. It has types. Can't escape typescript lol.

Already exists, roblox-ts is a TypeScript to lua compiler

@@zzhabib1 Yep and it's used in production by some very big games

yeah but luau is different, they control the full stack unlike ts which is just a transpiler to javascript

thats really cool

You could write it with types with Luau and use darklua to remove those types

GO MENTIONED LET'S RUST

​@@thingsiplaywhat

@@randerins yes

roblox has always had some flavor of lua powering their games. roblox has also been around for at least ten years, maybe 15 (I couldn't be bothered to check). so i bet that many of the kids who cut their teeth writing games and scripts for roblox 10 years ago are working in software today

holy crack, new dev comp wisdom just dropped

@@lwinklly hi

I think any system that is specific to a device that is not considered a general purpose computer could be called embedded

​@@bennythetiger6052I think prime's answer likely includes "device [or environment]" since he sometimes uses "embedded" to mean "embedded into a videogame". But yeah -- "specific to a device that is not considered a general purpose computer" is a pretty good definition, so long as you don't use "Turing machine" as your definition for "general purpose computer".

@@bennythetiger6052 i like that one.

@mage3690 I just mean a computer that wasn't made with a highly specific intention, like TVs for streaming videos, headphones for streaming audio, smart hubs for home or car controls, etc.

because you didnt have to use try catch :)

pcall?

@@tranquangthang8897 trivial to implement

@@tranquangthang8897 trivial to implement that in py

very easy to implement pcall in py

It should be a universal standard at this point. Every other ui system just feels so clunky

Brazil!!! 🇧🇷

Embedded scripting is what he is talking about, what you are talking about is embedded devices, those are like 99% done in C, occasionally some Ada or C++. Also arduino isn’t a language but a brand of MCUs, they use C with wiring HAL.

There's a browser with Lua instead of JS named Bussin Web X

Not exactly "native", but a WASM Lua runtime could probably be made with relative ease. I searched and it seems like someone's already working on one

graah why are you here

....CAVALO.

You mean the post Lua 5.1 stuff?

@@LtdJorge yeah, there's a 5.4 but both luajit and luau which I are pretty popular are stuck in 5.1 I know you can just use any version and it's not so super different, but it still makes Lua code less portable. I haven't checked but is this react-lua and the other Roblox stuff 5.1, or Luau syntax? Can it be used in Luajit? Or in official Lua? 🤷🏻‍♂️

@@pxkqd I'm pretty sure the React thing is in Luau, since it's for Roblox UI.

​@@pxkqdluau does have features from newer versions of lua, they're just really picky about what they add.

what's so bad about c#? I've only seen snippets, so I'm genuinely curious.

@@harleyspeedthrust4013 It suffers from the c++ syndrome of “features will continue until morale improves”, the standard library is a kitchen sink in which even microsoft doesn’t follow its naming conventions, there’s always million things happening implicitly, the build system and package manager suck, the tooling outside of microsoft stuff also sucks

It’s for the game engine and making game guis. Not for the site

C is used infinitely more in embedded.

C and Lua have 2 complimentary use cases in that area, no real overlap. you can't use Lua for the OS because it's interpreted and requires a runtime environment, you use a systems programming language like C or Rust for that, the idea is that you then implement a Lua interpreter into the program so you can use Lua to easily extend functionality without recompiling anything, makes it easier to do things like control the devices remotely with scripts.

"embedded" means different things here. you're thinking of embedded microcontrollers or microprocessors which are typically programmed in their own flavors of C/C++. but "embedded" can also refer to a scripting environment "embedded" in another piece of software - like a video game that lets you write scripts, or something like that

That's too bad, most programming languages use them. You might like Inform 7, though. Or Osmosian.

# is as magic as +, -, and !