array-compare

array-compare
=====

Performs a shallow diff on a set of arrays returning found, missing and added pairs. It works by searching the second array for the items of the first comparing by object equality. Optionally, you can provided a third parameter which will be used to identify objects by their id. Array-compare is also UMD compatible.



EXAMPLE
====

arrayCompare(arrayA, arrayB, )
---

``js
var arrayCompare = require("array-compare")

var arrayA = [
{ sandwich: 'turkey', good: 'no' },
{ sandwich: 'blt', good: 'yes' }
];

var arrayB = [
{ sandwich: 'turkey', good: 'yes' },
{ sandwich: 'pbj', good: 'yes' }
];

// use either syntax
arrayCompare(arrayA, arrayB, 'sandwich');
arrayCompare({ a: arrayA, b: arrayB, id: 'sandwich' });

// returns
// {
// found: [{
// a: { sandwich: 'turkey', good: 'no' },
// b: { sandwich: 'turkey', good: 'yes' },
// }],
// missing: [{
// a: { sandwich: 'blt', good: 'yes' }
// b: undefined
// }],
// added: [{
// a: undefined
// b: { sandwich: 'pbj', good: 'yes' }
// }]
// }
``

NOTES
===
It's not nearly as useful for basic arrays filled with numbers or strings, but will work. Also, it doesn't currently provide any indication of a change in order, though it should be trivial to add as the code already has access to both a and b indexes thanks to Mout.js and its findIndex function.

LICENSE
=======

MIT