When I learned Haskell at college it felt like if a hardcore Mathematician with zero experience in programming was tasked to design a programming language solely based in the definition of what a programming language is.

For the little more advanced users, here is an interpretation of the IO monad that I really liked: If you imagine that you put the state of our entire universe in a record World, then IO could be seen as a World Transformer. Thus, a function with side effects simply maps a state of the World to a new one. For example, putStrLn "Hello World!" takes a World where the screen is blank, and returns a World where "Hello World!" is on the screen :) I find this interpretation beautiful, and it doesn't violate immutability nor does it need side effects

I'm learning Haskell in university this semester. It's quite hard to learn but makes you feel like a wizard when it works 🧙‍♂

Pls try Elixir in 100 seconds. It's a really nice programming language. Great vid tho

The problem with Haskell is that once you try it, you never come back

Keep up the great content, absolutely love each single video you make!

I like these super quick breakdowns of the language and how to get started. Fantastic series thank you for making it

Learning Haskell was one of the most fun experiences of my life. Even if you never use it, learning it will expand your mind and make you a better programmer.

Functional programming is so cool. Even if you don't like hardcore functional programming, you can still take parts of it and include it into your own code in for example JavaScript.

Learning Haskell is an adventure. You're learning about currying, pattern matching etc. and you're like "this is such a cool language". Then monads just come out of nowhere and hit you like a brick wall.

I would probably give you a hug right now! Thank you for introducing Haskell to the community; 😊

Love your videos man! Your content is indeed fire like your channel logo.

Amazing! You made it sound incredibly simple, thanks!!

Okay, you've gottttt to do APL now. That wonderfully fascinating language deserves your (and our) attention.

I've been waiting weeks for this! Finally, FINALLY!!

I've only played with Haskell a little bit but the lib that blows me away is Parsec (parsing library). Being able to write interpreters in code that looks just like the BNF grammar sounds awesome! ( I haven't written one myself yet but have seen small examples.)

Just found this channel a few days ago. The content is AMAZING.

Super cool! I've always been fascinated by Haskell!

Seeing you got into functional programming maybe do a Prolog or Lisp in 100 seconds :)). I'm currently studying them in college and I found them a really nice eye opener for functional programming.

You finally delivered. Bless.

Took a class on that in uni and it was actually pretty damn cool. Makes you use your brain a lot more!

Please do Prolog next ! :) It's sufficiently different from the others to deserve its place. And more on Haskell would be cool too IMO.

YAAASSSSSSS. Finally! Been Waiting for this forever.

Love this series

Awesome, thanks so much! And congratulations on being first video I've ever changed the speed to slower so I can keep up :-D

Great video! Can you make a detailed video about different open source licenses like Apache, GPL, LGPL etc. It will be very helpful to everyone working with open source software and confused about the licenses.

Currently doing haskell at my uni. Learnt more in this video than in a few weeks worth of lectures.

Well, since you set foot in prohibited grounds and decided to scare the normies, now you have no excuse to not make a video about APL.

Oh, and the best part is Hoogle! If I don't know what function I need but I know what it would need to do, I can roughly describe it by writing it's type (what it should take and what it needs to give me) and I'll get all the functiona that match, (usually only a few, because the types are pretty specific). Of course searching by name works too

Thank you doing this! you are the best!!

Such a great channel to find out about new things quickly so that I can focus on deciding whether I can utilize it or not in my project. Thanks Fireship!

I am afraid to try Haskell cause I might become a functional nazi and refuse to write any code with side-effects

This was a great video. I liked it , I'll search more about it

Finishing up my first semester of cs and we used racket, a similar functional programming language. Happy to see some love for functional programming

These short videos are good to get to know other technologies you may have never thought looking for.

Love the animation of Haskel 🤩

The images for monads are so perfectly describing my time with Haskell monads

Best thing of learning Haskell is that you will never finish it. This is a thing with every language of course. But with Haskell is special because depending on your skill level and where you are at the learning curve you will use some tricks or others. Is just like doing Pure Maths, you come up with a trick for a specific problem and refine it further and further until you can define a pattern design or kind of a macro that generalises and then all of a sudden you are solving most of the problems of that field with that. Is much more "abstractable" than other languages.

This is really interesting! I recently created a project called Monad to share and discover code snippets, named after a philosophy concept, but it’s cool to see how it’s related to computer science.

I always have a lot of fun implementing the peano axioms in lisp-like languages. Learn you a Haskel for Great Good!

Learning Haskell is awesome, it's totally different world of programming

Explain please blockchan basic programming in one of your shorts. Great work. I really enjoy your videos :)

I started with Hashkell, but never really got to cross the learning barrier, this 100 seconds helped me with that.

darn incredible stuff!

Fireship on fire 🔥. Great video 👍🏻

good old haskell I remember having to work on a project with this language in 2013

Great vid, waiting for Prolog

Been learning Haskell for about 2 months now. Shit is maaaadd confusing but it’s really fun once you figure out. Even tho I say that about most languages this one feels even better to get right!

OMG YESS!!!!!!!!!!!!!!!!!!!! thank you!!!!!!!!! lemme grab some popcorn for 100 seconds

Thanks for the heads up, now I know to run when I see this language

Yes! finally. I have been waiting for this one! Still, this is the most procedural and non-functional explaination of haskell i've ever heard :)

First time hearing this language, thanks Fireship for introduce me to more new programming language

NICELY DONE ! - Data Scientist Mark in North Aurora IL

The only fear I have in life is 100 seconds videos just stopping. Please keep em coming i love em.

Should've included a bit more about types such as Maybe, Either. Learn You A Haskell For Great Good is such a cool Haskell book and a proper introduction to the language. It has been years since I used Haskell, but had a lot of fun using it back then. If I ever get some spare time again I might just play around with it again.

Haskell is a super interesting language. I mean you can write quicksort in one line using list comprehensions, you can check for list equality with the good ol ==, and so much. I wouldnt say I'd switch to it from my beloved C and C++, but it's definitely a fun toy language that can be really entertaining to use for coding challenges like advent of code for instance.

Awesome video as always, I was wondering if you could do Lisp as well?

I did Haskell for a total of 1 assignment in college and I thought it was really cool. He gave us a definition for a Lambda calculus expression to be stored as a variable, and then step by step got us `to write all the functions necessary to perform a beta reduction on any lambda calculus expression (if I'm remembering right) The definition was something like the form: `Term = Lambda Term | Application Term Term | Var 'x'`, so you could represent any lambda calculus expression with that by replacing "Term" with any of the 3 possible values for Term recursively e.g. Application (Lambda Var 'x') (Application Var 'x' Var 'y') And then we'd just pass that expression into whatever function we're calling it for e.g. beta-reduce (Application (Lambda Var 'x') (Application Var 'x' Var 'y'))

I learned it in very hard time in just two weeks, at the time i hated it but i really enjoy functional programming, after that i really liked haskell and enjoy it

I think haskells true strength is in its ecosystem. Hoogle and cabal/stack + vscode language integration make everything so much easier. If i need some utility functions or just don't want to implement some algorithm i just use a library by writing single line in my cabal config. I don't think any other language can compete in terms of ecosystem usability.

Yep, pretty much this. ^ I'd just add, that *all* the expressions and -variables- named expressions really evaluate to a single value. That includes the `main`! So for example, since both `print 5` and `print "Hello World"` have the type `IO ()`, you can glue them together into one single value and assign it to `main`. In that case, `main` would be an IO value that prints 5 and then prints the Hello World. What's awesome is that these really behave like regular values. You can juggle them around, put them in lists, etc. and they will do absolutely nothing until one shows up in `main`. Only then, the compiler will make it actually do stuff.

Jeff is still my favourite tech youtuber!

Nice video! Topic suggestions: Elixir and Pheonix?

These are so perfect for brushing your teeth. I'm never bored and I get to learn a little something. Very glad I found your channel this year. You've taught me a lot!

What do you think of the FORTH environment? its a language, OS, interpreter, and IDE all in one. its kinda neat. is used reverse polish notation. old but still cool (unlike COBOL)

Great! Thanks a lot!

Great video!! Try prolog too please. It's a logic programming language

Btw setting up Haskell’s basic tooling is easy these days. Just grab ghcup and you can manage the compiler/LSP server/build tool versions.

Ahhh, Haskell and Prolog gave me a really fun semester. :$

Please do extended version with explanation of typeclasses, they are really awesome

Hoping that you can do one of these on ROC when it comes out. Partly functional and very fast

@Fireship What software do you use to make these awesome videos?

great explanation

epic 🔥🔥🔥

Omg he actually did it

"Oh wow, that's really interesting" *never uses Haskell in my life*

Do a deeper dive into functional concepts!

Love your videos..Please do SCALA !

Haskell looks really scary with it's exotic syntax. Thanks for the good video.

Great video. Just so you know Haskell has a string type which is literally just an alias for a list of characters

Finally! Haskell!

Man the Haskell type system is so nice. If the program type checks there is a 95% chance that it works.

I am biased, being a tutor for functional programming/Haskell at uni, but... I believe the functional and "immutable by default" paradigm is crucial for going towards bug-free and reusable (re-combinable) code. Yes, it restricts code in certain ways (e.g. no "x = x + 1"), but these restrictions are extremely sensible and they allow a) the programmer to think more clearly (mathematically) and b) the compiler/runtime system to make powerful checks, guarantees and optimizations. For those wondering how incrementing a value a ("x = x + 1") would work in Haskell: You just introduce a new+different name for the new+different value - e.g. "y = x + 1"

The most beautiful and hard way to write top quality software

Didn't expect this

Great video as always. Does anyone know what color theme does fireship use in vs code ?

Question (not criticism)! Given the extremely limited time available (which is a very interesting format, btw!) What's the guiding principle to spend the time on "Haskell is a functional language, and here's where that means in general" versus "here's the Maybe type and, yeah, you can use all the Monad stuff on it!" There's no time set aside for type classes or higher order types, which is where Haskell improves on the world compared to, say, ML or Erlang. What's your goal function for what to include/cut? Would you describe C++ without virtual functions or templates? Or without pointers? Or without standard library? (In fact, I'll go see if there is a C++ one right now!) I'm genuinely curious about the process of squeezing into such a tiny box! (Looking forward to "process of making 100 second videos in 100 seconds!")

Haskell is not half bad. The infinite list / lazy evaluation is truly amazing. The lack of cycles/ having to use recursion/ foldr, etc is a bit crappy but understandable. Way better than Prolog

I have been using common lisp for a while, and it is the best syntax (including python) for me to understand. Everything I despised in python was not existent in lisp. Coming from there is there any advantage to using haskell other than enforced functional programming paradigms?

This reminds me How Powerfully abstracted the Javascript and Even C++ are!

the madlad finally did it.

Ummm .... I don't know if this is asking too much, but could you do Eiffel? This language came along about 20 years ago and attracted a lot of interest due to its concept of *contracts* but it never became popular. I'm curious what other languages picked up from Eiffel.

Scala in 100 seconds would be good to see, Functional programming on the JVM, very cool :)

haskell is making me love math why must it do this to me

There is also Clean IDE which is studied in ELTE. Everyone hate this subject although it is pretty fun

Hearing the word haskell gives me the heebie jeebies from college, but great descriptor. Love how you just completely moved around monads and typing ;) Functors are like mini monads that also sucked

can you cover apache groovy ? , love this series !!

Awesome! Well done! Can you do BQN in 100 seconds? :)

Is this an introduction to functional programing for an upcoming "Elm in 100 seconds" video? Or perhaps a prelude to "Clojure in 100 seconds" for the eventual "Clojurescript in 100 seconds"? 🤔🤔🤔🤔

I looked this up on youtube a couple days ago to see if you did it, and here we are.