Cast.typeOf("$11.13")        // => "currency"

// can pass a precedence array to speed up the process if you have a rough idea of the type
Cast.typeOf("$11.13", ["currency", "float", "integer"])

currency = Cast.as("currency")
currency.parse("$1,2419.84")                // => 12419.84
currency.format(325.83)                     // => "$325.83"
currency.sort(["$2", "$1", "$0.50", "$4"])  // => ["$0.50", "$1", "$2", "$4"]

// the "date" type is built on top of `moment.js`
var now = moment();
var dates = ["Jan 13, 2011", "01/24/1984", "1983-03-25"]; // note how we don't have to worry about the format of the date

Cast.as("date").filter(dates, function(moment) { return now.diff(moment, 'years') < 10; }); // => ["Jan 13, 2011"]

Cast.define("type", {
  validate: regex OR function(string) { ... },  // return nothing on success, anything on error
  parse:    function(string) { ... },           // return the parsed value
  format:   function(value, options) { },       // return the formatted value
  compare:  function(a, b) { ... }              // return -1, 0, or 1 (can be any negative or positive number)
})