Lambada — create simple functions easily in JavaScript

A lambda função vai estar com ele aonde for.

Lambada is a small library for creating simple functions easily in Javascript. It borrows the string lambda concept (and source code) from the Functional Javascript library:

$ node
> λ = require('lambada');

> f = λ('*10')
> f(7)
70

> f = λ('10 * a + b')
> f(4, 1)
41

> f = λ('x, y -> y + "!"')
> f('hello', 'world')
'world!'

Together with JavaScript's built-in high-order functions, lambada allows you to write terse, functional code:

> [6, 1, 4, 7, 5, 2, 4].filter(λ('>4')).map(λ('*11'))
[ 66, 77, 55 ]

Lambada also provides some practical utility functions for creating and combining other functions for common use cases. For example, function composition:

// Random numbers between 0 and 5 with one decimal digit
> random = λ.compose('/10', Math.floor, '*50', Math.random)
> random()
3.5
> random()
0.2
> random()
3.3
> random()
2.6

Read the tests to see more examples.

Lambada implements UMD so it should play well (crosses fingers) with RequireJS, Node and Browserify.

With lambada, you'll stop dancing like this:

\o     o/   \o\
 |\   /|     |
/\    < \   /\

and you'll begin dancing like this:

Instructions for development

$ git clone https://github.com/rbonvall/lambada
$ cd lambada

$ npm install    # Install development dependencies
$ gulp lint      # Lint code
$ gulp test      # Run tests
$ gulp uglify    # Minify

License

MIT license.