Memory

Operation & OperationQueue

Operations are an object-oriented way to encapsulate work that you want to perform asynchronously. Operations are designed to be used either in conjunction with an operation queue or by themselves Operations State An o...

Dispatch Group

Grand Central Dispatch (GCD) is a framework provided by Apple that was released in 2009 with OS X Snow Leopard & iOS 4. It provides easy to use API for the developers to to run background tasks by creating queue in seria...

DispatchSemaphore

An object that controls access to a resource across multiple execution contexts through use of a traditional counting semaphore. A dispatch semaphore is an efficient implementation of a traditional counting semaphore....

Swift Concurrency: Introduction

What is concurrency? Logic of your app to determine which pieces can run at the same time, and possible in random order, yet still result in a correct implementation of your data flow. Example: You have 10 images on an...

jQuery - Get Content & Attributes

jQuery contains powerful method for changing and manipulating HTML elements & attributes jQuery DOM Manipulation One of the important part of jQuery manipulate the DOM. We used \"getElementById()\" for accessing and ...