What is Scope? Scope determines the accessibility or visibility of variables to JavaScript. There are three types of scope in JavaScript: Global scope Function (local) scope Block scope (new with ES6) Variables declared outside a function are in the global scope. Global variables can be accessed and changed in any other scope. Variables defined within … Read more
UTF-16 UTF-16 (16-bit Unicode Transformation Format) is a character encoding capable of encoding all 1,112,064 non-surrogate code points of Unicode (in fact this number of code points is dictated by the design of UTF-16). The encoding is variable-length, as code points are encoded with one or two 16-bit code units. UTF-16 arose from an earlier fixed-width 16-bit encoding known as UCS-2 (for 2-byte Universal Character Set) … Read more
What is Smoke Testing? Smoke Testing is a type of software testing which is usually performed on initial software builds to make sure that the critical functionalities of the program are working absolutely fine. Smoke testing in technology is now broadly used to test product features in a limited time. If key features don’t work, … Read more
What Is Abstraction? Abstraction is the process of hiding the internal details of an application from the outer world. Abstraction is used to describe things in simple terms. It is used to create a boundary between the application and the client programs. Abstraction can be of two types, namely, data and process/control abstraction. Data abstraction … Read more
Both AngularJS and NodeJS custom web development frameworks have been designed for developing web applications with the help of JavaScript. However, both of them tend to differ on grounds of architecture and the functionalities. What is AngularJS? AngularJS is a type of structural framework that developers use when they need to create dynamic web applications that … Read more
A Heap is a special Tree-based data structure in which the tree is a complete binary tree. There are two types of heaps: Min-heap and Max-heap. A min-heap is used to access the minimum element in the heap whereas the Max-heap is used when accessing the maximum element in the heap. In a Min-Heap the key … Read more
What is Concurrency? Concurrency refers to the execution of multiple instruction sequences at the same time. It occurs in an operating system when multiple process threads are executing concurrently. These threads can interact with one another via shared memory or message passing. Concurrency results in resource sharing, which causes issues like deadlocks and resource scarcity. … Read more
What Is the Raspberry Pi? The Raspberry Pi is a tiny computer about the size of a deck of cards. It uses what’s called a system on a chip, which integrates the CPU and GPU in a single integrated circuit, with the RAM, USB ports, and other components soldered onto the board for an all-in-one package. It doesn’t … Read more
What Is Merge Sort? Merge sort is an efficient, general-purpose, comparison-based sorting algorithm. Merge sort is a divide and conquer algorithm that was invented by John von Neumann in 1945. Most implementations produce a stable sort, which means that if two elements have the same value, they hold same relative position in the output as … Read more
Synchronized Method & Synchronized Block Synchronization is the ability to control the access of multiple threads to share resources. Without synchronization, it is possible for one thread to modify a shared resource while another thread is in the process of using or updating that resource. There are two synchronization syntax in Java Language. The practical … Read more