Now let us create a forEach function that'll allow us to loop over all key-value pairs and call a callback on those values. For this, we just need to loop over each chain in the container and call the callback on the key and value pairs.ExampleforEach(callback) {    // For ... Read More

Here is the complete implementation of the HashTable class. This could of course be improved by using more efficient data structures and collision resolution algorithms.Exampleclass HashTable {    constructor() {       this.container = [];       // Populate the container with empty arrays       // ... Read More

Binary Tree is a special data structure used for data storage purposes. A binary tree has a special condition that each node can have a maximum of two children. A binary tree has the benefits of both an ordered array and a linked list as search is as quick as ... Read More

There are many ways to create an Array in JavaScript. We'll look at how to create an empty array first using 2 methods.let myArr = []; let myArr = new Array();Both of the above lines create an empty array. The JavaScript community always prefers the first method as it is ... Read More

To add a multi-line text input, use the HTML tag. You can set the size of a text area using the cols and rows attributes. It is used within a form, to allow users to input text over multiple rows.Here are the attributes of tag −AttributeValueDescriptionautofocusautofocusSpecifies that on ... Read More

This can be done using any of the below methods −In the Tools window → Navigate to Service menu → you can add a new rowThis can also be done by using T-Code SE11 → Select the relevant table. Navigate to Table Content → DisplayMake sure Debug mode is ON. ... Read More

If you have to use RFC, you can write RFC enabled function module. You can write a new FM that allows you to retrieve program source code. To start with, you need to create a structure as shown in below and based on which you have to create a table ... Read More

For creating multicolumn UNIQUE indexes we need to specify an index name on more than one column. Following example will create a multicolumn index named ‘id_fname_lname’ on the columns ‘empid’, ’first_name’, ’last_name’ of ‘employee’ table −mysql> Create UNIQUE INDEX id_fname_lname on employee(empid, first_name, last_name); Query OK, 0 rows affected (0.41 ... Read More

In Java, you can create an array just like an object using the new keyword. The syntax of creating an array in Java using new keyword −type[] reference = new type[10];Where, type is the data type of the elements of the array.reference is the reference that holds the array.And, if ... Read More

To unset a variable in JavaScript, use the undefined. After that, use delete operator to completely remove it.Let’s try the code snippet again.var str = “Demo Text”; window.onscroll = function() {    var y = this.pageYOffset;    if(y > 200) {       document.write(nxt);       nxt = ... Read More