I like how we are kind of getting to the point where all modern languages have extremely similar syntax

When i learn how to run a function in Kontlin, it was literally fun

- How's Kotlin? - We have a lot of "private fun" in it 😆😅

One of my favourite things about Kotlin is how it automatically generates (and USES) getters and setters, not just for data classes but for normal classes as well. When you write class.property, it implicitly calls the getter associated with the property (~ class.getProperty()) and you can overwrite the getters & setters yourself. It really makes code a lot shorter once you get used to it. class.property = value class.setProperty(value);

Man, I can't believe how qualitative and frequent your content on this channel is. Good stuff!

Really well done summary, you really mentioned everything important

My 3D printing teacher: mentions Kotlin when we were talking Fireship: I'm on it.

This man has answered the prayers I've been praying for a while. I think he saw my request in one of the comments or this vid was inevitable. Either way, you're a solid one, Mr. Fireship 🚀🚀🚀🔥🔥🔥

Guys, u know what, this is actually been more than 2 years and im so much in love with kotlin, i literally enjoy it a lot, also it have the fun keyword that tells that Kotlin is actually very fun to write, and i literally don't have any complaints or regrets for learning and using Kotlin.

Well, never ever stop this series. Whenever I need to learn anything new, I search for your 100s videos to get familiarized with the topic before I actually start learning it.

Kotlin isn't the first java alternative, but it's definitely the best so far. There's also Groovy and Scala

I am litteraly addicted to those videos. They're the first video I watch when I see them in my feed thanks to the simplicity of the information. It just gives a taste of the technology enough to motivate me in learning more. Amazing work as always. Swift would be very nice next! :)

"Look Mom! No Semicolons;" has gotta be the best thing I've heard in the last 3 months!

When I first discovered Kotlin, I was like, man.... How can something like this comes to mind ?!! Being multiplatform, a better Java, boiler-less, and many more. Not even TypeScript came close, in my opinion, when it comes to developer experience. I know both language BTW, and I also had Java in the past. Kotlin, for me, feels very human to read.

Still waiting for "How to write a Unix kernel in C in 100 seconds."

You’re a logical machine my dude! Churning out the high quality content DAILY

i have no word to describe the quality of the content. It's nearly unbelievable that someone thought me some basic about Kotlin in 100 seconds. Thanks for that qualitative and so frequent content.

i swear you are going to talk about all languages in existence

Kotlin makes you feel motivated learning OOP. Been using it for 6 months now for android development and damn I wish Ive known it sooner.

Waited for this for so long! This is my favorite language, and I really recommend it to everyone!

having written in Lua, JS, Java, python, C, and a bunch of other things it looks like Kotlin is a great mix of everything good you could pick from other languages

In addition to coroutines being its a killer feature, kotlin scoped functions also come in really handy

Keep it up Jeff. We're loving these 100 second videos! 👏

you can play with extension functions, inline functions and collections so much you might forget java. also good for spring boot based backend development.

Everyone: "Hello World!" Fireship: "hi Mom!"

I love the way he explains everything 😊 easily and quickly summary ❤️

Thanks for making this 🤗 I was waiting for it

I would really like to see some longer videos going into depth on some of the languages you go over. That would be sick.

To my most favourite KZfaq creator, Jeff, u now proved me that u don't dislike Kotlin, i hope u would try it more and fall in love with it. My wishes for u, and have a nice Kotlin!!😊😊😉

I love these format videos! I'd like too see videos on webpack, next js, redux and more 😃

This is super helpful. I wasn't trying to learn kotlin, I just needed to know what it is because I saw the option to use kotlin for android apps

I absolutely can't get enough of these overview videos, thank you! Please make one for Django 👉👈

Good video, man! I'm wondering whether you will bring more "JVM languages" to the language in 100 seconds. A Scala video would be amazing too

Random dev: so how's kotlin Me: It's so much *fun*

Honestly, I've been out of the Java world for many, many years, but something about Kotlin has got me excited again🤷‍♂

Love to see this channel growing

In Poland we got a ketchup called "Kotlin"

Learned and used it for my senior project. I took mobile dev at the same time but class was using Java. I wanted a challenge so I used Kotlin instead and I love it.

Finally we got what we r waiting for!! Thanks Jeff!!😊

I literally started with a Kotlin project to learn the language 1 hour before the video came out, perfect timing!

I as a beginner programmer might consider learning Kotlin because not only is it an easy language, it is also the perfect language to bridge the gap between Python and other, more complicated programming languages since Python is (one of) the first programming languages I've learned and this language's syntax is a little bit similar to Python. Thanks for the introduction!

I saw someone suggest this the other day watching your Java video - you mad lad, how did you already make this? I think 100 seconds of code is one of the best series for programming on KZfaq - great work

This has been 100 seconds of Jeff being an absolute boss at explaining stuff. Thank you ! ♥

Great video! I actually requested this one so thank you!

You should do Lua in 100 seconds, it's a pretty simple and fun language, especially when used with C++

You should do a video on the Ceylon language for the JVM. It's dead now, but had a similar goal to Kotlin. It had some influential stuff for its time, like the Null safety "?" syntax, but also has this crazy type system of union and intersection types. It's a cool language, shame it never caught on, although it lives throughout these new languages.

I just love those series, can have a look at all those cool languages even with my short attention span. Thank you

I love these videos, short and to the point.

I use Kotlin for over a year now and i love it, its my favorite and first pick language. It's great

I love how the biggest new languages in the last few years have basically been "that but not shit": - type script - kotlin - carbon (I know it's not out for another few years but they hype is already real)

Just as great and efficient as your website and your courses

You have the best pronunciation. I'm from Russia and I understand you. Thanks for video! I wait the next.

I wish I started Mobile Dev using Kotlin. Using Java is one hell of a pain in the a** to use.

I don't understand, I am just starting a project for an Android app and this man releases a video right as we are holding the discussion about Flutter vs Kotlin XD

as usual on point and good timing. I spend my last week to learn kotlin and here we are. :D thx dude

You are doing a great job, everything is clear and easy to understand❤️

There are many great things in Kolin, like the lambdas, that make it ridiculously easy to create and use DSLs. Other aspects feel a bit too much like workarounds for java issues. Take data classes, they provide a bunch of useful functionalities, but I have a hard time seeing how it is better than the more flexible derive machanism used in Rust. Haskell has something similar if I remember correctly. Coroutines are great, but async/await is probably the superior pattern in most applications. Kotlin can in theory be compiled to different targets, but in practice it's a huge pain. Despite being backed by two huge companies native targets are still way less performant than the JVM and lack support for many important elements of the standard library. All the Multiplatform projects I've seen are littered with expect and actual functions. This massively fractures the ecosystem, because libraries typically only support a few select platforms.

An interesting thing about Kotlin is that it does away with static members on classes (which is a kind of weird thing when you think about it, since it is not really so object-oriented) in favor of a "companion object" which has static methods. A class that can be instantiated can not have static members.

That’s a great overview video 👍

Thank you fam Your work effect crazy keep at it

I swear I'm just waiting for a "Brainf*** in 100 seconds" at this point. Perhaps for April 1st?

Best programming language so far. I really love it

Finally I love this Lang :)

i've just binge watch your 100 seconds series then this come out, thanks to kotlin my android making a lot easier

I am currently making an app using Android Studio written in Java, after watching this video I might develop my future projects in Kotlin :D

I've been using Kotlin for a few months now, by far the best language I've learned imo.

Great video! Clojure/Scala up next? A video on the JVM would be nice, thank you!

Oh! you did actually made this video! Just found it right after putting a comment in the previous video! Nice of you to make these videos. 😎

Dude, I told yall in that dart in 100 seconds video that kotlins gonna be next. It's proven that what I want, fireship delivers lol. Great work tho.

Best Tech sitcom, I can watch it everyday!

i like how if i have questions about programming and when i search on KZfaq, your videos always on the top

another great 100 sec video. thank you for doing this.

Kotlin seems fun() to learn

Learning Kotlin in this Semester. Your timing is awesome. Thank you. I use Arch, btw :)

that syntax is a lot more *fun* to write that pun is mandated by kotlintic law but that was tasteful execution, mr ship

Many thanks, I love the way you shout for your mom on every video, lovely gestures🌹

Java has data carrier classes called Record Classes since Java 14 which also does get rid of a lot of boilerplate code.

Kotlin is good for private fun 😇

Best channel for prograamming content Congrats on 904k subs

Can you please make a Scala 100s and lessons for the pro? Love your way of explaining!

Me: (browsing KZfaq, watching random videos) Fireship: (Posts 'Kotlin in 100 seconds') Me: :)

Its amazing how you fit all that in 100 Seconds 🔥🔥🔥

Holy shit this language looks amazing. Some of the nice ergonomics of javascript with the enterprise OOP support of java. I will definitely be trying this out sometime.

This video covered like 10% of the cools stuff Kotlin brings over java, but still gave a good feeling to watch! Kotlin is becoming the most loved language in the world and soon might take down JavaScript from the top ladder :D

I think my next language would be Kotlin 🔥

there's a minecraft mod called "Kotlin for Forge" that some other mods use as a library, so TIL that mod adds programming into programming.

I love that when I'm curious about a technology, I just need to type the name on YT and watch your video about it ❤️

So it's a beautiful blend of javascript and python ! Fantastic video !

Awsome summary but you forgot kotlin on the server ,ktor and spring also how powerful kotlin is at dsl with gradle as an example also with recent improvements as it trys to be used in data science. Kotlin is beautiful.

U are on a roll. One after another videos that I want

Kotlin is a fantastic language for backend code. Coroutines make efficient database code a breeze and actually fun to write/maintain

Aka java with syntactic sugar

Best way to throw shade on Java: introduce it as if it were OK, then 2secs later present its prettier faster better shorter sibling.

You deserve many more subscribers

Please do "Swift in 100 second" next !

So by this pattern, looks like swift would be next. Tell me if I'm wrong

yeeeeeeeeeeeees I was waiting for this... lessgoooo

You have mastered 100 seconds video editing art, champ. Lots of ❤

One day I will invent a language. Just for the sake that Fireship can summarise it. 😄

Using it in the backend and it is such a great language