Kotlin in 100 Seconds

kotlin a statically typed multi-paradigm language designed quite simply as a better alternative to java like java it compiles to bytecode that runs on the java virtual machine but kotlin provides a more concise syntax and language features loved by modern developers like type inference functional patterns null safety and more it was announced in 2011 by jetbrains with the first stable release coming in 2016. it's named after kotlin island in russia and it just got a mascot in october 2021 but it still doesn't have a name yet one of its key features is that it can interop with existing java code which means developers can gradually adopt it without throwing all of their code in the garbage in addition to jvm kotlin can also compile to native code and javascript opening the door to multi-platform apps it's been most influential in the android development community and as of 2019 google named it the preferred language for android development over java one of its killer features is co-routines which provides a simplified way to write asynchronous non-blocking code a common requirement for mobile developers to get started create a file ending in.kt most kotlin developers use something like intellij idea which is an ide brought to you by the same company that invented the language inside the file use the fun keyword to define a main function this is where your code will start executing and that syntax is a lot more fun to write than public static void main string args declare a variable with the var keyword assign a value and its type will be inferred automatically or you can add a colon after the variable name with an explicit type a variable can't be null unless you explicitly allow it with a question mark on the type now use printline to log the variable to the standard output notice how semicolons are optional which means that line breaks are significant kotlin supports familiar object-oriented patterns but can do special functional things that java cannot like modify the behavior of a class without inheritance using extension functions functions are first class objects which means they can be stored as variables passed as arguments or used anonymously with lambdas kotlin also reduces boilerplate with things like data classes so you don't have to write constructors getters and setters and supports destructuring when accessing the values on an object allowing you to write concise efficient code that you can then compile to a jar file by pulling up the terminal and running the kotlin compiler this has been kotlin in 100 seconds hit the like button and subscribe if you want to see more short videos like this thanks for watching and i will see you in the next one

Channel: Fireship

Views: 1,181,505

Keywords: webdev, app development, lesson, tutorial

Id: xT8oP0wy-A0

Length: 2min 21sec (141 seconds)

Published: Fri Nov 05 2021