What are Null Pointer Exceptions (java.lang.NullPointerException) and how to avoid them?
What are Null Pointer Exceptions (java.lang.NullPointerException) and how to avoid them? A java.lang.NullPointerException is thrown there’s an attempt to use null anywhere an object is actually required, such as trying to directly modify a null object.…
What is an ERROR and its Types !
What is an ERROR and its Types !An Error is a term used to describe any issue that arises unexpectedly that cause a computer to not function properly. Computers can encounter either software errors or hardware errors. What is the difference between an…
IOS-12 Features
IOS-12 Features System features Performance Performance optimizations were made in order to speed up common tasks across all supported iOS devices. Tests done by Apple on an iPhone 6 Plus showed apps launching 40 percent faster, the system keyboard…
What is Kotlin Programming Language ?
Kotlin is a statically typed programming language that runs on the Java virtual machine and also can be compiled to JavaScript source code or use the LLVM compiler infrastructure. Functional programming style Kotlin relaxes Java’s restriction of…
What is Constructors and Creating Objects in Objective C !
What is Constructors and Creating Objects in Objective C ! Constructor/initializer is a method which we call while creating a new object in Object Oriented Programming. In this method we write all the code related to initial setup of an object. Objective…
List of MATLAB – Commands
Commands for Managing a Session MATLAB is an interactive program for numerical computation and data visualization. You can enter a command by typing it at the MATLAB prompt ‘>>’ on the Command Window. Command Purpose clc Clears…
how to convert images from one color-space to another in IOS using OpenCV !
In OpenCV all the image processing operations are usually carried out on the Mat structure. In iOS however, to render an image on screen it have to be an instance of the UIImage class. To convert an OpenCV Mat to an UIImage we use the Core Graphics…
How to store and retrieve files and data from AWS using Transfer-manager
How to store and retrieve files and data from AWS using Transfer-manager Both the Amazon S3 TransferManager and TransferUtitliy classes make it easy for you to upload and download files from Amazon S3 while optimizing for performance and reliability.…
What Is Identity Access Management(IAM) in AWS ?
Identity Access Management AWS Identity and Access Management (IAM) is a web service that helps you securely control access to AWS resources for your users. You use IAM to control who can use your AWS resources (authentication) and how they can use…