I'm building a server using Node.js. I store the objects representing my users in an associative array and right now the index of those objects are the sockets id of that connection. Using the Socket.io library i obtain it by simply doing socket....
In JavaScript, all Objects act a bit like hashmaps.  However, the keys to these hashmaps must be strings.  If they're not, they're converted with toString().  That means:  var a = {foo: 1}; var b = {bar: 2}; var o = {}; o[a] = 100; o[b];...
I have an enum:  var a = {X: 0, Y: 1};   And, I want to create another enum from the values of the first one.  Something like this:  var b = {a.X: "foo", a.Y: "bar"};   Doing this gives me a SyntaxError: Unexpected token .  Is there a...
I am considering using JavaScript object as a dictionary.      var dict = {}     dict['a'] = 1;     dict['b'] = 2;      var my_first = dict['a'];   I am not clear about the time-complexity of such implementation. Is it like ha...
I created a simplehashmap using the accepted solution in this question: How to create a simple map using JavaScript/JQuery  I however need to send this var to a servlet and retrieve them onto a Java HashMap. How do I do that.  The key is a string whi...
My requirement is to store key-value pairs in a data structure and fetch or delete the pairs when necessary using keys in JavaScript.  How can I do it in JavaScript as one does it in Java?  I have seen an answer creating an instance of hash map like:...
I have String like below.  10=150~Jude|120~John|[email protected]=150~Jude|[email protected]=111~Eminem|2123~Sarah   I need a way to retrieve the string by giving the ID.  E.g.: I give 20; return 150~Jude|440~Niroshan.  I think I need a HashMap to achieve th...
In javascript, I have a hash map of key value pairs like:  "team", "aemt" "meat", "aemt" "car", "acr"   And I want to store all of the matching values with the length of the string like this:  {4, {"...
I have an array named territory which contains the following    i want to create a hashmap where the  key is the id  [id atribute of each object wihin territory]  and the   value is the entire object  any help/pointers on the same?  thankyou...
For example: Given an array:  var a = [5,4,3,2,1,4,5,6,7,1];   Expected Sum would be: 3+2+6+7 = 18  There should only be a single for loop in the entire code.  My Failed Approach:  var a = [1,1,1,2,2,2,3,4,5,6,7,7,8,2] var expected = 3+4+5+6+8  const...

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