# backbone-shard

## Overview

Backbone.Shard is a variation on a Subset taken from different perspective. Shard was built as a simple "persistent filter" for collections; it can help grouping and displaying items of certain kind based on your filter function. I know it works for me, but your mileage may vary.

## Usage

It's easy if you're familiar with Backbone.Collection since Shard shares with it most of the methods marked Underscore methods in the documentation:

var shelf = Backbone.Shard({
collection: books,
});



You can add/remove models or reset the original collection and Shard will honestly try to keep up with it, but currently Shard itself has no methods such as add/remove/reset.

Events work and respect your filter function:

shelf.on('add', doSomething);