functor collection: works with coll(k) to get, coll.add(k, v) to add, coll.del(k) to remove

annotated.js

function( f /* blank */ ){
  
  f     = function(k){ return f.h[k] };       // Get an object by key
  f.add = function(k,v){ return f.h[k]=v };   // Add a new object
  f.del = function(k){ delete f.h[k] };       // Remove from collection

  f.h   = {};  // Store the objects in the function object itself
  return f
}

example.js

C = function(f){f=function(k){return f.h[k]};f.add=function(k,v){return f.h[k]=v};f.del=function(k){delete f.h[k]};f.h={};return f};

var col = C();
col.add('a', 'apple');
col.add('b', 'beer');
col.add('c', 'cola');
col.add('d', 'dodo');

col.del('d');

console.log( ['a', 'b', 'c', 'd'].map(col));
console.dir(col);

var col2 = C();
col2.add('moo', 'cow');
console.dir(col2);

index.js

function(f){f=function(k){return f.h[k]};f.add=function(k,v){return f.h[k]=v};f.del=function(k){delete f.h[k]};f.h={};return f}

LICENSE.txt

            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
                    Version 2, December 2004

 Copyright (C) 2011 Bruno Carriere <http://js-montreal.org>

 Everyone is permitted to copy and distribute verbatim or modified
 copies of this license document, and changing it is allowed as long
 as the name is changed.

            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

  0. You just DO WHAT THE FUCK YOU WANT TO.

package.json

{
  "name": "funcolmicro",
  "description": "",
  "keywords": [ "collection", "hashmap", "functor" ]
}