Nodejs Function Call partial()

Method Source Code

/*//from w  w  w.ja  va 2s .c o m
 * Delicious Bookmarker
 * Copyright (c) 2009,2010 Haran Shivanan <shivanan@statictype.org>
 * Licensed under the MIT License. See the LICENSE.txt file
 */
Function.prototype.partial = function(){
    var fn = this, args = Array.prototype.slice.call(arguments);
    return function(){
      var arg = 0;
      for ( var i = 0; i < args.length && arg < arguments.length; i++ )
        if ( args[i] === undefined )
          args[i] = arguments[arg++];
      return fn.apply(this, args);
    };
  };

Related

1. times(n)

   Function.prototype.times = function (n) {
     if (n <= 0) {
       throw new TypeError('Invalid argument');
     var fn = this;
     return function () {
       for (var i = 0; i < n; i += 1) {
         fn.call(null, arguments);
     };
   };
   

2. map(map)

   Function.prototype.map = function (map) {
       var params = this.getParamNames();
       var fn = this;
       for (var i in params)
           fn = fn.bind({}, map[params[i]]);
       return fn;
   };
   

3. times(f, context)

   Number.prototype.times = function(f, context){
     var n = Number(this);
     for(var i = 0; i < n; i++){
       f.call(context, i);
   };
   

4. times(f, context)

   function Range(from, to) {
       this.from = from;
       this.to = to;
   };
   Range.prototype = {
       constructor: Range,
       includes: function(x) {
           return this.from <= x && x <= this.to;
       },
   ...
   

5. times(f, context)

   Number.prototype.times = function(f, context) {
     var n = Number(this);
     for(var i = 0; i < n; i++) f.call(context, i);
   };
   String.prototype.trim = String.prototype.trim || function() {
     if (!this) return this; 
     return this.replace(/^\s+|\s+$/g, ""); 
   };
   Function.prototype.getName = function() {
   ...