What is Objective-C language used for?
What is Objective-C language used for?
Objective-C is a general-purpose, object-oriented programming language that adds Smalltalk-style messaging to the C programming language. This is the main programming language used by Apple for the OS X and iOS operating systems and their respective APIs, Cocoa and Cocoa Touch.
How to use the screen of an Apple Watch?
Tap the screen to select a button or item. On Apple Watch models with Always On, a tap brings the screen to full brightness. Tap the screen and keep your finger in place to change the watch face, see options in an app, and more. Drag your finger across the screen to scroll or adjust a slider. Swipe up, down, left, or right to see different screens.
How do I use the gestures on my Apple Watch?
You can use several gestures to interact with your Apple Watch. When you touch the screen, your watch uses Force Touch technology to sense how hard you press. Firmly press the screen to change the watch face, see options in an app, and more.
How do I use the digital crown on my Apple Watch?
Learn how to use the Digital Crown, side button, and gestures. Press to see the watch face or Home screen. Double-click to return to the last app. Press and hold to use Siri . Turn to zoom, scroll, or adjust what’s on the screen. On Apple Watch Series 2 or later,* turn to unlock the screen during a swimming workout .
Is Objective-C hard to learn?
Perhaps my own experience with the Objective-C programming language will sound familiar to you. I grew up in a world of dots, semicolons, and curly braces that are known around the programming world as the familiar syntax of JavaScript, Java, C#, and many other programming languages. “Objective-C can’t be that hard” I thought.
What is a variable in Objective-C?
In programming, a variable is basically a container used to hold data. The data itself can be anything from a simple number to the lyrics and metadata about a song. When we create a variable in Objective-C, we usually specify what kind of data it will hold. This is known as statically typing the data.
What is Objective-C and why should you care?
As you might guess from its name, “Objective-C” is based on the C programming language, with lots of object-oriented features added. It was originally developed in the early 1980s but has really gained in popularity with the rise of iOS.
