A couple underscore.js mixins
drews-mixins is a library of underscore.js mixins. You can
use it both in node.js and in the browser.
See tests at http://drews-mixins.the.tl/test/test.html
To install for node.js
npm install drews-mixins
node.js example usage (in coffeescript)
_ = require "underscore" require("drews-mixins") _ _.s "the s is a substring", 0, 5 #--> "the s"