iOS DeviceCheck API - Unique Identifier for the iOS Devices 1. Overview Using the DeviceCheck APIs, in combination with server-to-server APIs, you can set and query two bits of data per device, while maintaining user privacy. You might use this data to identify devices that have already taken advantage of a promotional offer that you provide, or to flag a...
Swift Optionals Chainings by Example - Swift Programming Language 1. Introduction An optional in Swift is a type that can hold either a value or no value. Optionals are written by appending a ? to any type: var optionalName: String? = "Developer Insider" print(optionalName) //prints "Optional("Developer Insider")" Optionals are one of the most...
iOS iPhone X - iOS Developer Guide iPhone X features the stunning 5.8-inch Super Retina display, enabling even more immersive app experiences. Start testing your apps now to make sure they are ready to take advantage of the Super Retina display by respecting safe areas, supporting adaptive layouts, and more. Let's learn how to...
Apple Apple macOS and iOS XNU kernel source code is now available on GitHub About XNU Kernel XNU kernel is part of the Darwin operating system for use in OS X and iOS operating systems. XNU is an acronym for XNU is Not Unix. XNU is a hybrid kernel combining the Mach kernel developed at Carnegie Mellon University with components from FreeBSD and C+...
Swift Learn Swift Programming Language on Windows OS using Swift IBM Sandbox Update - IBM discontinued Swift Sandbox. Alternatively, now you can run Swift natively on Windows 10 using WSL. Here the complete guide to run Swift on Windows. The IBM Swift Sandbox is an interactive website that lets you write Swift code and execute it in a server environment – on top...
Swift Operator Declarations by Example - Swift Programming Language An operator is a special symbol or phrase that you use to check, change, or combine values. For example, the addition operator (+) adds two numbers, as in let i = 1 + 2. Swift supports most standard C operators and improves several capabilities to eliminate common coding errors. Like, the assignment operator...
Swift Dictionary by Example - Swift Programming Language Overview * A collection whose elements are key-value pairs. * A dictionary is a type of hash table, providing fast access to the entries it contains. * Each entry in the table is identified using its key, which is a hashable type such as a string or number. * You use that key to...
Swift Set by Example - Swift Programming Language Overview * An unordered collection of unique elements. * You use a set instead of an array when you need to test efficiently for membership and you aren’t concerned with the order of the elements in the collection, or when you need to ensure that each element appears only once in...
Swift Array by Example - Swift Programming Language Overview * An ordered, random-access collection. * you use the Array type to hold elements of a single type, the array’s Element type. An array can store any kind of elements—from integers to strings to classes. 1. Creating and Initializing an Array 1.1 Creating an Array * Swift makes it...
Swift Double by Example - Swift Programming Language Overview * Double represents a 64-bit floating-point number. * Double has a precision of at least 15 decimal digits, whereas the precision of Float can be as little as 6 decimal digits. * Swift always chooses Double (rather than Float) when inferring the type of floating-point numbers.If you combine integer and floating-point...
Swift Float by Example - Swift Programming Language Overview * Floating-point numbers are numbers with a fractional component, such as 3.14159, 0.1, and -273.15. * Float represents a 32-bit floating-point number. 1. Converting Floating-Point Values 1.1 init(_:) * Creates a new instance that approximates the given value. let x: Double = 21.25 let y = Float(x) print(...
Swift Advanced Enum (Enumerations) by Example - Swift Programming Language 1. Properties We can't add actual stored properties to an enum, but we can create computed properties. The value of computed properties can be based on the enum value or enum associated value. Let's create an enum called Device. It's contain a computed property...
