Scala.js

Scala.js is an open source programming language created in 2013 by Martin Odersky.

Source code:

git clone https://github.com/scala-js/scala-js

#190on PLDB

11Years Old

Scala ( SKAH-lah) is a general-purpose programming language providing support for functional programming and a strong static type system. Designed to be concise, many of Scala's design decisions aimed to address criticisms of Java.Scala source code is intended to be compiled to Java bytecode, so that the resulting executable code runs on a Java virtual machine. Scala provides language interoperability with Java, so that libraries written in both languages may be referenced directly in Scala or Java code. Read more on Wikipedia...

Scala.js website
Scala.js Wikipedia page
Scala.js is developed on GitHub and has 4,324 stars
Scala.js first developed in https://github.com/scala-js
Scala.js compiles to JavaScript
There are 181 members in the Scala.js subreddit
scala-js.org was registered in 2013
See also: (37 related languages)JVM, JavaScript, LLVM IR, Eiffel, Erlang, Haskell, Java, Lisp, Pizza, Standard ML, OCaml, Scheme, Smalltalk, Oz, Ceylon, Fantom, F#, Kotlin, Lasso, Red, Java Bytecode, C, Android, Pascal, C#, Python, ML, CSP, Groovy, Clojure, Swift, Perl, Go, PowerShell, Objective-C, R, Ruby

Example from the web:

class Person(val firstName: String, val lastName: String) {
 def fullName(): String =
   s"$firstName $lastName"
}

Example from Wikipedia:

val urls = List("https://scala-lang.org",  "https://github.com/scala/scala")

def fromURL(url: String) = scala.io.Source.fromURL(url)
  .getLines().mkString("\n")

val t = System.currentTimeMillis()
urls.par.map(fromURL(_))
println("time: " + (System.currentTimeMillis - t) + "ms")

Language features