How to use Promises (and why you should) in Roblox Development

[@rotozap]

As someone coming into the dev space with prior experience to traditional software/web development practices, I really appreciate you making these videos that show the 1:1 implementation of these practices into Roblox.

[@niletheus]

are u Breadian?

[@KebeMaro]

Great video , it's nice to see a video that shows a specific library and why people should use it and how to use it, hope to see more like that.

[@BRicey]

Glad it was helpful! I could do a ton more for sure, but a lot of nice up and coming libraries are still in active development and not ready for production, but once they are fully released, stay tuned for a video!

[@KebeMaro]

@@BRicey Sounds great , I can't wait for that to happen , hope to see more of the great videos!

[@ryanpmcguire]

As a professional developer I’m quite impressed by this. I used to play Roblox when I was a kid and I haven’t in years. I’m glad to see Roblox is giving youngsters a solid outlet for writing useful programs. You will be a very very good developer later on

[@onlytaylor8257]

hard to say if roblox is still for kids when the top devs are multi millionaires lmao.

[@Baditow]

@@onlytaylor8257 at this point most developers are corporate shills who don't care for making good games and instead milking the space dry

[@ritsu9837]

aint no way is this a coincidence i was actually am trying to find a good tutorial or even just an api guide for the promise module and then you posted, thank you so much!

[@BRicey]

I was reading ur mind

[@lumbergrim6231]

You are the best person for looking for these more advanced Roblox tutorials

[@ShortyJustin]

I didn't know promises could be used for a round system this actually going to help my round-based games so, thanks!

[@friedavi]

This is awesome and really instructive... Keep on the great work!

[@BRicey]

Glad you liked it!

[@lolleavingthischannel6826]

Just checked out a different tutorial and this literally melted my mind! thats how you know its good

[@Simo-dm1zd]

10:10 so basically it's the same things as "try ..., catch... , finally..." on java

[@BRicey]

Sort of except honestly I like this pattern better. Exceptions in languages like java are cool, but result or option chaining in something like rust is better imo, and this is more similar to the latter.

[@pokruk0]

In first one example you can just connect to destroying event and disconnect from touched signal there. Really strange example. Second one are more about error handling, not promises itself, it'sjust a good practice to do critical things even when error pop up

[@betatester03]

What would you recommend as some more helpful examples?

[@pixelthegreat1203]

Great Educational Video this will help me with my games!

[@torpedofan8532]

You should try to explain the Signal library next

[@Venopon]

I have seen it before but didn't bother learning it. Thanks for the video, I'll use it. :)

[@ritsu9837]

oh and i got some recommendations for tutorial content: Maids(I think you already have covered this); Spring Module; Advance cframe (cant really find any that's good)

[@BRicey]

I haven't done maids yet, I still need to do that lol... Advanced cframes would be a good video, but I would like to focus it on some actual cframe problem, not general instruction. Like, instead of making a video about raycasts I'll make a video about guns. If you have any ideas for an equivalent challenge with cframes, make sure to let me know!

[@lumbergrim6231]

@@BRicey I think you should do a video on nevermore engine implentation

[@ritsu9837]

@@BRicey custom signals would be good as well

[@zxibs3645]

@@BRicey t by osyrisrblx, a really good runtime-typechecking module

[@도경이-t2l]

Wow.. Good tutorial. It' really helpful. Thanks

[@BRicey]

Glad it was helpful!

[@theleo7886]

Can you make an abbreviations numbers sistem?Please

[@absolute_zero982]

that will be really helpful if you add Tutorial on Trove

[@AT_arjun]

My question: What Are Promises?

[@Asp3ctD3v]

sorry for the late comment but can you teach us about the lapis library

[@timesl]

Hey, can you make a tutorial on how to make a data saver for something you buy in a game, for ex if u buy like a part in a game when you leave and rejoin it saves the part

[@whoman0385]

one problem.. nesting

[@audreysbigheart]

can u make a vid about bodygyro again? it seems like roblox changed it

[@Jj-yw4mw]

Nice video very informative. I still don't understand though, why is using this module better than taking 2s of my time putting in a conditional to stop any error from happening in the first place?

[@BRicey]

Because after a while it will take a lot of space and what happens if u forget ?

[@pepperdayjackpac4521]

@@BRicey how will a conditional take a lot of space?

[@polishedmeat6399]

Is bridgenet worth using?

[@NewEdens]

Can this be used in local scripts?

[@lbsdark]

I'm using something on Mac, does anyone know a mac tutorial?

[@holderman1206]

I think the first two examples are just terrible. In the first example, if you see having reference to the primary part is a band-aid solution (which I see as the better one) why do you think the promise one isn't? It adds even more boilerplate code and things to care. You even said that you technically caused a memory leak because you forgot to take care of something and that it wouldn't be structured that way in a real game anyway. That just defeats the whole purpose the example if it's not gonna be like that in a real game. In the second example, if an error occurs, you should actually just solve the issue rather than putting them in a promise and ignoring it, which was just basically pcalling with extra steps in this particular example. You wouldn't know what kind of error your got or what went wrong. It can even cause more issue depending on the error you got which your code will have no idea of because you've just made it ignore the error.

[@BRicey]

The promise solution prevents code from running that doesn't need to run... and in a real game you'd just give all of your promises to a trove or maid or janitor for it to clean up on an object's deletion (I admit my explanation was poor but the concept is still there). As for the second example, by all means feel free to actually address the problem at hand, but in reality no developer will ever catch every bug before production -- it's better to write error resilient code than just assume your code's gonna work. And, no one's stopping you from catching the error and logging it to a database to try and replicate later and fix. Not gonna lie though, I was of your opinion for the longest time, but after sustained work on a big project, incorporating promises really helped my code.

[@coolkid_2554]

help me do this please i want the player to open a gui if its health is less than 35 if Player.Character.Humanoid.Health

[@ascendedreality8546]

... Put the script in side the gui. , change script.Parent.Parent.Visible = true to script.Parent.Visible = true, and make sure you define player

[@stemaidev]

show setup and use cases for maids please

[@BRicey]

should be coming soon

[@gemmken]

have you guys ever promised a bot? yea, after this

[@piraloco5864]

So, is this like a maybe monad? intresting!

[@BRicey]

Lol I never thought I would hear someone comparing concepts already learned in Haskell to roblox, but yes you are right. There's also a more general library called Option in Roblox meant to mimic Rust's option type which was based on Haskell's maybe. I love the functional programming though, keep at it!

[@WindyPivot]

What is the difference between task.wait and just wait 🧐

[@BRicey]

It’s better. Just use it. Normal wait has a couple of issues

[@WindyPivot]

@@BRicey I see, alr

[@MarioMario-yb3iz]

@@WindyPivot yea what he said, task.wait is the newer version anyways

[@OcnarfPro]

task.wait() is more accurate, the lowest it can go is 1/60 seconds while for wait() it is 1/30 seconds

[@lossycompressed]

could you cover another library called "RaycastHitboxV4"? this will be extremely helpful if you do, and thanks.

[@wowland6873]

Raycast hitbox provides an API for you to read, perhaps try that instead.

[@lossycompressed]

@@wowland6873 lol, thanks i already figured it out with reading the module comments and peeking in a raycasthitbox weapon example

[@8ava8198]

its called pcalling.

[@BRicey]

You can chain promises but not pcalls, and add custom behavior to them too.

[@templed2021]

i promise you that this is very useful

[@moodyblues165]

I've 2 suggestion! Add weapons Or add a money display instead of relying on the leaderboard telling you Include all if you want :)

[@GalaxyedRainbow]

Or Do local model = workspace.Model model.PrimaryPart.Touched:Connect(function() if model.PrimaryPart ~= nil then model.PrimaryPart.BrickColor = BrickColor.Red() end end)

[@Martanus]

easier is if not model.PrimaryPart then return end

[@OskarP2601]

useless library imo. solving a problem that wasnt there in the first place tbh

[@alek002]

...

[@SULTANVIDEOGAMES]

pcall

[@AmazingRocker]

I wish this video existed when I was learning promises 🥲, Anyways great content as always man!