OpalOPAL (OPtimized Applicative Language) is a functional programming language first developed at the Technical University of Berlin.The most used programming languages Apache Groovy Fortran Python C Sharp Rust Go Java TypeScript Julia Visual Basic … CoffeeScript Clojure PowerShell C Lua Objective-C C++ Elixir Scala JavaScript Vim (text … Ruby Perl Dart Swift Erlang Smalltalk Kotlin Lean (proof …