Nodejs Array Check isLastIndex(index)

Method Source Code

/**/*from  w w w . jav a  2 s .c  om*/
 * Determines if the index is the index of the last element in the array
 * @param {number} index - The index to check
 * @param {Array} array - The array to check
 * @return {boolean} true if the index is the last element
 */
Array.prototype.isLastIndex = function(index) {
   return index == (this.length - 1);
}

Related

1. isBlank()

   function proxy(func, context, args) {
       return function () {
           return func.apply(context, args);
   Array.prototype.isBlank = function () {
       return !this.length;
   };
   

2. isCharPresent(charSearch)

   Array.prototype.isCharPresent = function(charSearch) {
     var arr = this;
     var result = [];
     var testingStr = '';
     if (charSearch.length > 1) {
       return "You're searching for more than one char";
     for (var i = 0; i < this.length; i++) {
       if (arr[i].indexOf(charSearch) === -1) {
   ...
   

3. isDefined(key)

   Array.prototype.isDefined = function (key) {
       return this.filter(c => {
           if (key) return c[key];
           return !!c;
       });
   

4. isDistinct()

   Array.prototype.isDistinct = function() {
     this.sort();
     for (var i = 1; i < this.length; i++) {
       if (this[i - 1] == this[i])
         return false;
     return true;
   };
   

5. isInt()

   Array.prototype.isInt = function (){
     return this.filter(function(n){ return (typeof(n) === 'number') && (n%1 === 0)})
   };
   Array.prototype.even = function (){
     return this.isInt().filter(function(n){ return n%2 === 0})
   };
   Array.prototype.odd = function (){
     return this.isInt().filter(function(n){ return n%2 !== 0})
   };
   ...
   

6. isMember(b)

   Array.prototype.isMember = function (b) {
     return this.some(function (i) {
       return this == i
     }, b);
   

7. isNFromLastIndex(index, n)

   Array.prototype.isNFromLastIndex = function(index, n) {
     return (this.length - 1 - n) == index;
   

8. isNothing()

   Array.prototype.isNothing = function() {
     return this.length === 0;
   };
   

9. isNumberArray()

   'use strict';
   Array.prototype.isNumberArray = function() {
       return !this.some(x => typeof x != 'number');
   module.exports = function segmentNumbers(arr) {
       arr = arr.sort();
       if (!arr.isNumberArray()) return [];
       let container = [],
           items = [],
   ...