pipe.js

// A function which which allows you to apply a list of functions (supplied as arguments) to a value.
//
// Usage: pipe(functions...)(value)
//
// Example: var getFirstWordLetter = pipe(getFirstWord, getFirstLetter);
// getFirstWordLetter('Sean MacIsaac')
// -> 'S'

function pipe () {
  var functionList = [].slice.call(arguments);
  function _init_() {
    var rest  = functionList.slice(1);
    var value = functionList[0].apply(null, arguments);
    if (rest.length) {
      return pipe.apply(null, rest)(value);
    }
    return value; 
  }
  return _init_;
}