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In this article, you will learn how you can download an image from a URL in the Swift language. In the iOS application, image downloading from the image URL is the most common task. Apple provides us with a native library to download any data from any URL. There are many third-party libraries available on GitHub to download the images. But in this tutorial, we are not going to use any third-party library. We will use the URLSession class provided by Apple itself. What is the URLSession Class? URLSession is a class in the Foundation framework that provides an API ... Read More
Swift gives you some methods to perform on the collection type to get the index of a particular object. To find the index of an item in an array in Swift, you can use the firstIndex(of:) method of the Array type. This method returns the index of the first element in the array that is equal to the given element or nil if no such element is found. How to print the Index of List items? Let's look at an example. Algorithm Step 1 − Define an input array. Step 2 − Call the firstIndex() method on the input array. ... Read More
The goal of this article is to explain how you can add constraints programmatically in the Swift language. To programmatically add constraints in Swift, you can use the NSLayoutConstraint class to define the constraints you want to add. Concepts That Will Be Used To Add Constraints Are The Following The translatesAutoresizingMaskIntoConstraints is a property of UIView in the UIKit framework. It is a boolean value that determines whether the view's autoresizingMask properties are translated into Auto Layout constraints. When translatesAutoresizingMaskIntoConstraints is set to NO, the autoresizingMask is ignored and the view is resized accrding to any constraints that have been ... Read More
This article will explain to you how to generate random numbers in the Swift language. There are some common situations when you need to generate random values in your iOS apps such as Simulating dice rolls. Shuffling playing cards. Create a unique ID for a user. The random value from collection type. In Swift 4.2, there are new, simple and secure ways to generate random values. Before that, there was a random function written in the C language. Today, you'll learn about the random() function that takes a range of values and as an output, it returns a ... Read More
You should know what an AppDelegate is in Swift before jumping to how to get a reference to it. AppDelegate In an iOS application, the app delegate is the entry point for the application. Throughout the application, this object has been created once by iOS and is accessible in shared mode. It's responsible for handling key events and tasks related to your app's lifecycle, such as responding to system notifications and managing the app's window and view hierarchy. Where it is Defined? The app delegate class is typically defined in the AppDelegate.swift file of your Xcode project. It should conform ... Read More
In this article, you will learn how to obtain the Nth character of a string. You will use the index() method to get the Nth character of a string. This method will give you the position index of the given string. How to use the Index() Method? Let's look at an example of how to use the index() method Algorithm Step 1 − Prepare an input string. Step 2 − Call the index() method with the target offset. Step 3 − Use the position index as a subscript to the input string. Step 4 − Store the Nth character. Example ... Read More
IT security firms and ethical hackers have seen rapid expansion in response to the proliferation of cyber dangers brought on by rapid technological development. When the EC Council proposed the idea of ethical hacking in the aftermath of the September 11 terrorist attacks, it was met with a range of reactions. The word "Ethical Hacking" is an oxymoron, and neither the public nor the media were prepared to embrace it at first. The EC Council defined it as a security measure for the networks. To keep sensitive data and systems safe from malicious hackers, "ethical hackers" adhere to a code ... Read More
The field of cybersecurity has always been at the forefront of technological innovation, as trained cybersecurity specialists utilize ever-more innovative methods to keep malicious actors away from their essential corporate assets. The field of artificial intelligence (AI), on the other hand, has been on a comparable high-flying trajectory for about a decade already. The field of cybersecurity and artificial intelligence are coming into direct contact more frequently than ever before, a meeting that is expected to have far-reaching repercussions worldwide. A study that was conducted by Cap Gemini in the previous year found that 63% of organizations have plans to ... Read More
Comprehensive threat management solutions are an absolute must for every IT professional's toolkit when it comes to the protection of systems, networks, and data; nevertheless, not everyone is aware of how to take preemptive actions against potential threats. When a potential threat has been recognized, a firewall, such as an intrusion detection system (IDS) or a security information and event management (SIEM) system, may start to carry out its duties. You will need to develop and execute a threat-hunting plan in order to provide enough protection for the information technology infrastructure of your company from malicious cyber actors. According to ... Read More
The provision of independent IT certifications is an area in which CompTIA has established itself as the standard. The three certificates that are the most well-known are A+, Network+, and Security+. A CompTIA certification may help you stand out in the IT world, regardless of whether you are just starting in the field or are a seasoned veteran. CompTIA certifications are valuable since they are not dependent on a certain vendor's products. Nobody is required to remain loyal to a single vendor, whether it is Microsoft, Cisco, Novell, HP, or VMWare. It is a common misconception that acquiring a CompTIA ... Read More