JSPM

An array is a collection of values, stored contiguously. This was my attempt at a simpler array manipulation API. Most are immutable methods, and do not modify the arguments. Any that do for performance reasons end in $. Many methods, like union() also accept a compare function. More performant versions accept a map function instead to avoid O(n²) calls, and end with On. I find this map-approach beautiful, which i learned from Haskell's sortOn().

You can notice that i have followed Javascript naming scheme as far as possible. Some names are borrowed from Haskell, Python, Java, Processing. They are grouped together by function, in reference below. Did i miss some really useful method?

Each method is also available as separate package for use by bundling tools, like browserify, rollup, uglify-js.

Stability: Experimental.

const array = require('extra-array');

array.last([1, 2, 3]);
// 3

var a = [1, 2, 3, 4];
array.swap(a, 0, 1);
// [2, 1, 3, 4]

var a = [1, 2, 3, 4];
array.rotate(a, 1);
// [4, 1, 2, 3]

array.bsearch([1, 3, 5, 7], 5);
// 2                 ^ found

[...array.permutations([1, 2, 3])];
// [
//   [ 1, 2, 3 ],
//   [ 2, 1, 3 ],
//   [ 1, 3, 2 ],
//   [ 3, 1, 2 ],
//   [ 2, 3, 1 ],
//   [ 3, 2, 1 ]
// ]

reference

Browserified, minified version of this package is extra-array.min.