In programming, as in life, you have to make decisions and act on them. Objective-C provides control statements and loops to help your program take action. You may want to repeat a set of instructions based on some condition or state, for example, or even change the program execution sequence. Here is the basic syntax […]
Objective-C Operators , Objective-C also provides a set of so called logical operators designed to return boolean true and false. The OR (||) operator returns 1 if one of its two operands evaluates to true, otherwise it returns 0 sizeof Operator Conditional Expression Address Operator Pointer * operator Arithmetic Operators Operator Description + Adds two […]
Functions and Methods in Objective-C,A function is a named block of code that can be called upon to perform a specific task. It can be provided data on which to perform the task and is capable of returning a result to the code that called it. The function can be programmed to accept the values […]
Swift Functions are self-contained chunks of code that perform a specific task. You give a function a name that identifies what it does, and this name is used to “call” the function to perform its task when needed. A Swift 4 function can be as simple as a simple C function to as complex as […]
How to Troubleshoot the Scanner of an all-in-one printer is a straightforward process of elimination. You begin at the most basic level, striking off those issues that are not the problem and work your way up the ladder of complexity until you have a working scanner. The computer does not recognize a scanner Verify the […]
Troubleshooting your Mac, The first things I’d try are to reset both the NVRAM and SMC in that order. Before following the steps below, ensure you have no external hardware connected and make sure you use the built-in keyboard. Reset the NVRAM Shut down your machine. Yes, a full shut down, not just logging out. […]
An optional in Swift is basically a constant or variable that can hold a value OR no value. The value can or cannot be nil. It is denoted by appending a “?” after the type declaration. An optional in Swift is basically a constant or variable that can hold a value OR no value. The […]
Increasing Productivity,Are you tired of always not being able to meet your deadlines? Do meetings scare you now? Is there anything you feel you need to change in your routine to put your best foot forward? Well, these are a few questions that all of us have asked ourselves at least once in our entire […]
Characters and Strings in Swift, A string is a series of characters, such as “hello, world”. Swift strings are represented by the String type. The contents of a String can be accessed in various ways, including as a collection of Character values.The syntax for string creation and manipulation is lightweight and readable, with a string […]
As a coder, you want to have a computer that makes your work comfortable. After all, you sit in front of a screen typing on a keyboard for eight or more hours every weekday, and it is not great for your health. The situation becomes even worse when you have extra worries about dealing with […]
Building intuitive, aesthetically appealing websites is a daunting task for a web developer. It takes time to design and develop websites that attract the target audience and boost traffic. Even the most talented and disciplined web developers experience burnout and productivity decrease. Thousands of tasks, tight deadlines, difficult clients, and many distractions lead to a […]
The Session and cookies are used by different websites for storing user’s data across different pages of the site. Both session and cookies are important as they keep track of the information provided by a visitor for different purposes. The main difference between both of them is that sessions are saved on the server side, […]
Activate Spotlight for Searching To bring up a handy search interface that will let you find files on your Mac, just use Command + Space. Spotlight can do all kinds of things, from locating files to answering basic questions to solving math problems. Swap Between Apps To switch between your open applications, press Command + […]
Attributes Operators Definition, Objective-C is the primary programming language you use when writing software for OS X and iOS. It’s a superset of the C programming language and provides object-oriented capabilities and a dynamic runtime. Attributes Operators Definition in Objective-C inherits the syntax, primitive types, and flow control statements of C and adds syntax for […]
Objective-C is the primary programming language you use when writing software for OS X and iOS. It’s a superset of the C programming language and provides object-oriented capabilities and a dynamic runtime. Objective-C inherits the syntax, primitive types, and flow control statements of C and adds syntax for defining classes and methods. It also adds […]
What Is an Optional Optionals in Swift , The underlying concept of an optional is easy to grasp. An optional acts as a container for a value of a particular type. The container holds a value or it doesn’t. Type safety is a cornerstone of the Swift language. As a result, variables and constants need […]
Comment Styles, In computer programming, a comment is a programmer-readable explanation or annotation in the source code of a computer program. They are added with the purpose of making the source code easier for humans to understand, and are generally ignored by compilers and interpreters. The syntax of comments in various programming languages varies considerably. […]
A special character is a character that is not an alphabetic or numeric character. Punctuation marks and other symbols are examples of special characters. Unlike alphanumeric characters, special characters may have multiple uses. Special characters and symbols have importance in many programming languages like the execution of the database query, commenting, syntax writing, writing codes, […]
Data Types, Since Swift, is a new programming language for iOS, macOS, watchOS, and tvOS app development. Swift provides its own versions of all fundamental C and Objective-C types, including Int for integers, Double and Float for floating-point values, Bool for Boolean values, and String for textual data. Swift is a type-safe language, which means […]
4k Resolutions, Resolution measures the number of pixels in a digital image or display. It is defined as width by height, or W x H, where W is the number of horizontal pixels and H is the number of vertical pixels. For example, the resolution of an HDTV is 1920 x 1080. What is resolution […]
