Swift

In Swift, a dictionary is a data structure that stores information in key-value pairs. You can iterate or loop through a dictionary to access the keys and values within the loop. There are several ways to achieve this, including using  for-in loops and forEach methods. Using a For-In loop The for-in loop is a simpler way to iterate…

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In today’s tutorial, you’re going to delve into the world of Swift functions once again, exploring a powerful feature: variadic parameters. This tutorial builds upon the concepts you learned about how to Create a Function in Swift, Nested Functions, and Functions With Default Parameters. If you haven’t checked that out, I highly recommend you give…

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Adding items to a dictionary is easy, but understanding the options and best practices can make your code cleaner and more efficient. This tutorial will guide you through the various ways to add items to a Swift dictionary, from the simplest syntax to more advanced techniques. 1. Add Item to Dictionary Using Subscript Syntax This…

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In the previous tutorial, I explained how to create a function in Swift, and their importance in keeping the code modular and organized. Well, functions can also be written inside other functions, and Swift’s official documentation suggests this helps to encapsulate useful functionality within a nested function scope. In this tutorial you will learn how…

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In this Swift tutorial, I’ll show you how to add new functionality to existing Swift classes using class extensions. It’s a powerful feature in Swift that lets you add your own methods or computed properties to already-defined classes, making them more versatile. Let’s start with a very simple example. Creating a Simple Extension In Swift,…

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In this short Swift code example, we will use the UIAlertController to create an alert dialog message with only one “OK” button. The code example below will demonstrate how to: Create UIAlertController with a Title and a Message to display, Add a UIAlertAction with the OK label to UIAlertController, Handle UIAlertAction to know when the user taps…

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The following Swift code example demonstrates how to create a UIWebView programmatically and how to make it render HTML code. To break it into smaller steps, the below code snippet demonstrates how to: Create UIWebView programmatically, Implement UIWebViewDelegate functions webViewDidStartLoad and webViewDidFinishLoad, Make UIWebView render HTML Code. Render HTML in UIWebView import UIKit import WebKit class…

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The Swift code example below demonstrates how to customize the UINavigationBar appearance via the AppDelegate.swift file. The blow Swift code example covers: Set UINavigationBar tint color, Set Navigation bar Title color, Set navigation bar ItemButton tint color, Set Navigation bar background image, Set navigation bar Back button tint color. import UIKit @main class AppDelegate: UIResponder, UIApplicationDelegate…

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In this short Swift code example, I am going to share with you how to load the content of a property file into NSDictionary. And in this particular example, I will load the content of the Info.plist file which is available in our projects. But you can use this approach to load up the content…

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In this Swift code example, you will learn how to disable UIButton. The quickest way to disable the button in Swift is to simply set the button’s isEnabled property to false. For example button.isEnabled = false.  Below is a complete code example in Swift that demonstrates how to: Create new UIButton, Position button within a view,…

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