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Add to SafariScala vs LiveScript
When comparing Scala vs LiveScript, the Slant community recommends Scala for most people. In the question“What are the best (productivity-enhancing, well-designed, and concise, rather than just popular or time-tested) programming languages?” Scala is ranked 21st while LiveScript is ranked 67th. The most important reason people chose Scala is:
The immutable values make it perfect for working with concurrency
Specs
Question Ranking
Pros
Pro Immutable values
The immutable values make it perfect for working with concurrency
Pro Multiparadigm
Scala supports both Functional and Object Oriented styles of programming. Beginners can learn both paradigms without having to learn a new language, and experts can switch between the two according to what best suits their needs at the time.
Pro Type inference
Scala offers type inference, which, while giving the same safety as Java's type system, allows programmers to focus on the code itself, rather than on updating type annotations.
Pro Compiles to JVM bytecode
Aside from Java itself, Scala is by far the most popular of the many JVM languages. If you're developing for Android, or a similar JVM-only platform, or otherwise need out-of-the-box cross-platform compatibility, but the performance of a compiled language, Scala is the way to go.
Pro Very good online courses
On coursera you can find great introduction to Scala by Martin Odersky.
Pro Type inference leads to a simpler syntax
Pro Expressive functional programming abstraction for reusable and safe code
Pro Designed for High-level functional code
LiveScript has terse syntax for common functional operations like map, and ships with a library, prelude.ls, with many of the functions most commonly used by functional programmers.
Pro Good amount of programmer flexibility
There's a huge range of features that can make common tasks faster.
Pro ECMA 6 Features
It is the declared goal of LiveScript’s creators to track ECMAScript 6. Hence, the language gives you ECMAScript 6 plus type annotations (which are optional).
LiveScript's module syntax is currently a bit behind the ECMAScript 6 specification (something that will be fixed eventually). It supports two module standards: CJS (Node.js) and AMD (RequireJS).
Pro Fixes coffeescript scoping issues
= is used to declare variables in the current scope, in order to redeclare variables of outer scope := is used. This way bugs are reduced.
Pro Supported by WebStorm and Visual Studio
Cons
Con Can be intimidating for beginners
Scala is an industrial language. It brings functional programming to the JVM, but not with a "start small and grow the language" perspective, but rather a very powerful language for professional programmers.
Con Way too complex for beginners
Even for seasoned programmers it's a difficult language.
Con Static type system inherits cruft from Java
The type system is too complicated yet still less powerful than Haskell's.
Con Strong functional lean
LiveScript is designed to be a high level functional language. For people who prefer a more imperative approach it can be hard to get used to.
Con Compiles to unreadable javascript
JSON.stringify(
each(upCaseName)(
sortBy(function(it){
return it.id;
})(
(function(){
var i$, ref$, len$, ref1$, j$, len1$, ref2$, results$ = [];
for (i$ = 0, len$ = (ref$ = table1).length; i$ < len$; ++i$) {
ref1$ = ref$[i$], id1 = ref1$.id, name = ref1$.name;
for (j$ = 0, len1$ = (ref1$ = table2).length; j$ < len1$; ++j$) {
ref2$ = ref1$[j$], id2 = ref2$.id, age = ref2$.age;
if (id1 === id2) {
results$.push({
id: id1,
name: name,
age: age
});
}
}
}
return results$;
}()))));