staticallytyped JVMtargeted programming language JAVA compatible JVM Java

statically-typed JVM-targeted programming language

JAVA compatible JVM Java Script

JVM

How to make a cup of coffee?

A cup of JAVA 7?

Not alone…

What is that “main stream” language? • Language C# Go Kotlin • Libraries A lot So-so All Java • Tools (IDE? ) Visual Studio No IDE Jet. Brains Tools

Modern language for industry

More • Traits (interfaces with code) • First-class delegation • Modules • Generic with proper variance • Extensions (like in C#) • Null safety • Operator overloading • …

What Kotlin is not • NOT A Research project • NOT A proprietary language • NOT A Domain language

Little hands on

Nulls Can be Null

Nulls 2

How JAVA is seen from Kotlin?

Annotations

External annotations

Inferring annotations

What Buys Me?

Jefferson Lab at Newport News

Hall. D

Calibrations problem 11 000 channels Calibration constants 250 000 values Physics 2014 2024

CCDB Infrastructure Map<String, Int> data = calib. Get(“/target/position”) JAVA Python calib->Get(data , “/target/position”) C++ CCDB >Command line tools_ WEB Maintain 2/19/2021 24

My feelings • Language pleasant. • IDE is great • Feels like concise updated C# • Mixing JAVA and Kotlin really works • Readability is high when you know language at least a little

Kotlin for Web?

Web problem 1

No abstraction for css and html

Bravery stupidity?

HTML in Kotlin

CSS in Kotlin

KARA Framework • https: //github. com/Tiny. Mission/kara

Kotlin for Android? • YES! • Jetbrains has Android studio • Kotlin fully works there

Spek specification (testing) framework

How it works • Given – Establish the context of the test, i. e, Arrange • On – Execute the action, i. e. Act • It – Validate the results, i. e. Assert Test run in IDEA