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Programming Articles
Page 1956 of 2547
JAVA Program to Calculate Length of Chord of the Circle
A circle is a round shape two-dimensional diagram which has no corners. Every circle has an origin point and every point on the circle maintains equal distance from the origin. The distance between the origin and a point in a circle is known as Radius of the circle. And similarly, if we draw a line from one edge to another edge of the circle and the origin is held in the middle of it, that line is known as diameter of the circle. Basically, the diameter is double of the length of the radius. Chord of the circle refers to ...
Read MoreGolang Program to get the denominator from a rational number
In this article, we will discuss how to get the denominator from a rational number. Rational numbers − In mathematics, rational numbers are defined as numbers that can be expressed in the form of a/b where a and b are integer values. For example- 1/3, 5/8 etc. Note that the denominator of a rational number can never be zero. Syntax func NewRat(a, b int64) *Rat func (x *Rat) Denom() *Int NewRat() function takes two integer numbers as input arguments and returns a rational number in the form of a/b. here a is the numerator and b is the denominator ...
Read MoreGolang Program to Convert Character to String
In this article, we are going to learn about how to convert characters to string go programming language. Chars − Go language does not have a char data type on the contrary characters in go language are represented by rune data type. Rune represents a character value that is encoded in UTF-8 format. The size of the runes is 32-bits. Strings − String data type is used to store a sequence of characters. it can be in the form of literals or alphabets. The size of the string variable is 1 byte or 8 bits. There are two approaches to ...
Read MoreGolang Program to Create an Interface
In this article, we are going to learn about how to create an interface using golang programming INTERFACE − In the go language, an interface is a custom type that is used to specify one or more method signatures. An interface is abstract i.e. we cannot create an instance of the interface but we can create a variable to the interface type and assign this variable to the struct or class that has methods needed by the interface. Syntax type interface_name interface { // method signatures } Example 1 To define an interface first we need ...
Read MoreGolang Program to Create a Class and Object
In this article we are going to learn how to create class and object. Structs − Go language does not have classes. To create an object in the go programming language we can specify structs and store key-value pairs in it. A struct is a user-defined data type that is used to store data together. The values so stored may have the same or different data type. Syntax The syntax to define a structure is as follows − type name_of_struct struct { name_1 type_1 name_2 type_2 name_3 type_3 ...
Read MoreWhat is the difference between Array and NSArray?
Since Array and NSArray are both core constructs in iOS development, we sometimes forget just how different they are. Here are some major differences between the two constructs that you should know about. Array is a struct, therefore it is a value type in Swift. NSArray is an immutable Objective C class, therefore it is a reference type in Swift. Array is a Swift construct, and generic struct, which means that it can be an array of any specific type (Int, String, etc.). [T] is syntactic sugar for Array. NSArray is an Objective-C construct that can hold any Objective-C ...
Read MoreWhat is an attribute in Swift?
Throughout this article, you will learn what an attribute in Swift is and how to use it with code examples. Swift Attributes Swift makes it possible to provide some additional info about the declaration or type. We have two types of attributes that can be used in Swift language. Declaration Attributes Type Attributes Syntax You can apply an attribute by using the symbol @ followed by the attribute name, as shown below − @attribute name @attribute name(attribute arguments) Explanation We can provide arguments in declaration attributes to define the declaration. These arguments can be provided in parentheses ...
Read MoreWhat is a Delegate in Swift?
In this article, you will learn about what Delegate is and how it works. What is Delegation? As the name implies, delegation gives control to other objects. To make it happen, the delegate object has to be assigned to control other objects. In iOS apps, the UIApplicaitonDelegate is an example. UIApplicationDelegate allows you to modify iOS behavior, such as receiving push notifications, opening URLs, and launching apps. A delegation pattern ensures the functionality that needs to be delegated is provided. Delegate patterns enable objects to communicate back to their owners decoupled from their code. It is much easier to ...
Read MoreWhat are the common execution iOS Application Lifecycle?
In this article, you will learn about the different execution states of an iOS application. Based on the current state, you can decide what task you want to perform. There are different states that an app might have. The iPhone operating system (iOS) provides us with different five states of an application like the following − Not running Inactive Active Background Suspended An iOS application runs in several states, known as states of the application life cycle. App life cycles are crucial for iOS developers, as they help them understand how their apps behave. The following states are ...
Read MoreHow to write a Multiple-Line Comment in Swift?
In this article, we will discuss Swift's comments, why, and how to use them correctly in Swift. Always keep one thing in mind while writing code i.e. The code must be written for people to read and understand as much as possible. Similarly to the Swift language, comments are very useful for making your code more easily understandable to you and other developers. All the comments in the code are completely ignored by the Swift compiler. There are two types of comments in Swift − Single Line Comments Multiline Comments Single Line Comments Syntax Swift allows us to ...
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