- Queue
Queue is an ordered list in which insertions are done at one end (back) and deletions are done at other end (front). The first element to be inserted is the first one to be deleted. Hence, it is called First in First out (FIFO) or Last in Last out (LILO) list. In general, a queue […]
- MySQL Server Helpful Functions
Show connections that your MySQL server has Show all users of your MySQL server Describe a table
- Javascript this keyword
The this keyword references the object of which the function is a property. In other words, the this references the object that is currently calling the function. When this is used alone, the owner is the Global object, so this refers to the Global object. In a browser window the Global object is…
- Javascript Promise
The Promise object represents the eventual completion (or failure) of an asynchronous operation and its resulting value. A Promise is a proxy for a value not necessarily known when the promise is created. It allows you to associate handlers with an asynchronous action’s eventual success value or…
- ArrayList
ArrayList is a resizable array or dynamic array implementation in java. ArrayList grows dynamically and ensures that there is always a space to add elements. The backing data structure of ArrayList is an array of Object class. ArrayList class in Java has 3 constructors. It has its own version of…