AllowArrays

gistfile1.js

/**
 * Author: Kirill Cherkashin 
 * 
 * Before: 
 * a(1);
 * a(2);
 * a(3);
 * a(4);
 * Now:
 * var b = AllowArrays( a, 0 ); //We do it with the first argument, but we can have more comma-separated 
 * b([1,2,3,4]);
 *
 */

var a = function(){
  console.log( arguments);
};
 

var acceptArrays = function(  ){
  var args = Array.prototype.slice.call(arguments);
  var func = args.shift();
  var firstArg = args.shift();
  
  if( typeof firstArg !== "number"){
    return func;
  }
  
  return function(){
    var new_func, new_args;
    
    
    args.unshift( func );
    var argument =  arguments[firstArg];
    if( typeof argument === "object"){
      for( var i in  argument)  {
        if( argument.hasOwnProperty(i)){
             new_func =   acceptArrays.apply( null, args );
             new_args = Array.prototype.slice.call(arguments);
             new_args[firstArg] = argument[i];
             new_func.apply( this, new_args );
        }
      }
      
    } else {
       new_func = acceptArrays.apply( null, args );
       new_func.apply( this, arguments );
    }
    
  };

}
var b = acceptArrays( a, 0 );
b(0,1);
b([0,1],"first");


var c = acceptArrays( a, 1 );
c(0,1);
c(0,[1,2]);

var d = acceptArrays( a, 0, 1 );
d([1,2],[3,4]);