Nodejs Number Calculate plus(num)

Method Source Code

/**//from   ww  w.ja v a2s.  c  o  m
 * var a = (5).plus(3).minus(6)   // 2
 */


Number.prototype.plus = function(num) {
   return this + num
};
Number.prototype.minus = function(num) {
   return this - num
};
Number.prototype.multi = function(num) {
   return this * num
}

debug((5).plus(3).minus(6))
debug((5).multi((3).plus(2)))
debug(6..multi(2..plus(2)))

/**
 * var a = add(2)(3)(5)
 */

function add(x) {
   return function(y) {
      return function(z) {
         return x + y + z
      }
   }
}

debug(add(2) + '\n\n')
debug(add(2)(3) + '\n\n')
debug(add(2)(3)(5) + '\n\n')

Related

1. plus( num )

   Number.prototype.plus = function ( num ) {
     return this + num;
   };
   Number.prototype.minus = function ( num ) {
     return this - num;
   };
   Number.prototype.multiple = function ( num ) {
     return this * num;
   };
   ...
   

2. plus()

   Number.prototype.plus = function() {
       if ((arguments.length == 0) || (arguments.length > 1) || isNaN(arguments[0]))return;
       return Number(this.toString()) + Number(arguments[0].toString());
   };
   Number.prototype.minus = function() {
       if ((arguments.length == 0) || (arguments.length > 1) || isNaN(arguments[0]))return;
       return Number(this.toString()) - Number(arguments[0].toString());
   };
   console.log(2);
   ...
   

3. plus(i)

   function calcfibonacciNumbers() {
     var i,
         nm = [];
     nm[0] = 0;
     for(i=1; i<10; i++) {
       if(i==1) {
         nm[i] = nm[i-1] + 1;
         console.log (nm[i]);
       } else {
   ...
   

4. times()

   Number.prototype.times = function () {
       return _.times(this, function (i) {
           return i;
       });
   };
   

5. times()

   Number.prototype.times = function () {
     var a = [];
     var i = -1;
     while (++i < this) {
       a.push(i);
     return a;
   };
   

6. timesPlusOne()

   Number.prototype.timesPlusOne = function () {
       return _.map(this.times(), function (i) {
           return i + 1;
       });
   };
   

7. timesRepeat(f)

   Number.prototype.timesRepeat = function(f){
     for(var i=0; i<this; i++){
       f();