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Articles on Trending Technologies
Technical articles with clear explanations and examples
What does "Fatal error: Unexpectedly found nil while unwrapping an Optional value" mean?
This error is very frequent as you can see many times while writing code. Don't worry, you will understand this error in detail in this article. Before jumping to the cause of this error, let's understand what is optional in Swift. Optional Initially, when we receive a value from another source, such as the backend server, it might contain a valid value or nothing at all. In that case, you use optionals that represent a variable with two possible situations: either a value or no value at all. var possibleNumber = "450" var convertedNumber = Int(possibleNumber) In the above ...
Read MoreLoading/Downloading an image from a URL in Swift
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 MoreHow to find the index of a list item in Swift?
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 MoreHow to add constraints programmatically using Swift
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 MoreHow do I get a reference to the app delegate in Swift?
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 MoreWhy Businesses Need Ethical Hackers?
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 MoreNavigating the Intersection of AI and Cyber Security
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 MoreAll About Threat Hunting and the Skills You Need to Become One
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 MoreHow CompTIA Certifications Can Help IT Professionals?
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 MoreHow to Avoid Common BYOD Pitfalls at Work?
Many businesses now adhere to the "bring your own device" (BYOD) policy, which states that employees are allowed to bring and make use of their own personal electronic devices for work-related reasons. Businesses that allow their workers to bring their own electronic devices to the office can save money since they do not have to provide their employees with mobile phones, computers, or tablets of their own. According to a survey that was published on Insight, the market for bring-your-own-device (BYOD) policies is anticipated to reach more than $360 billion by the year 2022. The implementation of regulations that allow ...
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