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Swift Articles
Page 10 of 40
How to get a unique device ID in Swift?
In Swift, you can use the UIDevice class to get a unique device ID. In this article, you will learn how to get a unique device ID using the identifierForVendor property in Swift. What is the UIDevice Class? Swift's UIDevice class gives access to device information like as name, model, system version, and unique identifier. Here's a rundown of some of the most significant attributes and methods of the UIDevice class − current − The current device object is returned by this class attribute. name − This property returns the device's name. model − The model of the device, ...
Read MoreHow do you create a Swift Date object?
In Swift, there is the Date class to work with all kinds of date formats. You can manipulate and format date objects using the Date class. There are other supported classes like DateComponents, DateFormatter, etc that help you format date objects from one type to another type. Let's learn about dates with some examples. In Swift, you can create a Date object using the Date() initializer, which returns the current date and time − let currentDate = Date() Creating a Date Object From a String Representation You can create a Date object from a string representation of a date ...
Read MoreHow do I concatenate strings in Swift?
In Swift, you can use the "+" operator and join function to join the strings. You can concatenate multiple strings using this operator. In this article, we will see some examples of how to concatenate the strings. Here are several examples of using the operator and in-built functions. Algorithm Step 1 − Create the strings Step 2 − Combine both strings using the given function Step 3 − Print the input and output string on the console Example 1 In this example, we will see an example of adding two strings with a space. import Foundation let ...
Read MoreHow can I convert string date to NSDate?
In Swift, you can use the DateFormatter class to convert a string date to a date object. This class provides date conversion properties and methods. In this article, we will see some examples of date conversions. DateFormatter Class Swift's standard library has a class that is used to convert dates. It may be used to change a string into a date object and the other way around. To parse date objects in various formats, this class offers attributes and methods. You must build an object of the DateFormatter class in order to transform a string to a date object and ...
Read MoreSwift Program to Split a set into Two Halves
In Swift, a set is used to create an unordered collection of unique elements. To split a set into two halves we use a approach in which we first determine the midpoint of the given set using integer division method and then loop through the set and insert element into either the first half or second half set according to the index related to the midpoint. For example − Original Set - [2, 4, 5, 6, 7, 1] Set1 - [2, 4, 5] Set2 - [6, 7, 1] Algorithm Step 1 − Create a function which takes ...
Read MoreSwift Program to Show Use of Super Keyword in Class
In Swift, super keyword in used to access or call the methods, properties, and initialisers of the superclass from the base class. Or we can say that super keyword add more functionality to the superclass by adding its own unique behaviour. You can use super keyword with class properties, methods, and initialisers. Example In the following swift example, we will create a superclass or base class named as Books with bookName property, init() initialiser and display() method. Then we create a subclass named as Author, it is inherits from Author class along with override initi() initialiser and display() method. In ...
Read MoreSwift Program to Show Usage of Static keyword in Class
In Swift, static keyword is used to define or create type-level properties and method that only belongs to the class itself rather than to its instances. Or we can say that we can directly access the static properties and methods of a class with help of class itself instead of creating the instance of the class. Algorithm Step 1 − Create a class. Step 2 − Inside the class define static property using static keyword and a instance property. Step 3 − Also define a static method using and static keyword and a instance method. Step 4 − Outside ...
Read MoreSwift Program to Search an Element in a Set
In Swift, to search elements in a set we can use either contains(_:) function or linear search. Both the methods efficiently search an element in a set. Lets discuss both the methods in detail along with examples. Method 1: Using contains(_:) Function Swift provide an inbuilt function named as contains() function to search an element in a set. This function return true if the specified element is present in the given set. This function will return false if the specified element is present in the given set. Syntax sets.contains(myElement) Where sets is a finite set and myElement represent the ...
Read MoreSwift Program to Rotate Elements of an Array
In Swift, we create a user defined function to rotate the elements of an array. In this function, first we find the total number of rotation and then rotate the array by the specified number of rotation. For example − Array = [3, 5, 2, 1, 7, 9] Rotation = 2 Resultant Array = [2, 1, 7, 9, 3, 5] Algorithm Step 1 − Create a function that rotate the elements of the array in the specified number of rotation. Step 2 − Inside the function first we find the required number of rotations. Step 3 − Then ...
Read MoreSwift Program to Reverse a Set
In swift, a set is a unordered collection that only contain unique values. As we known that a set is an unordered collection so their is no direct way like an array to reverse the elements of the set. However you can reverse a set by converting it into an array and then apply reversed() method or any user defined function. And then convert back the result into set. Let discuss this method with the help of examples. Example 1 In the following example, we will have a set of string type. Now we convert it into array to ...
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