What are protocols and delegates?
Protocol is a set of methods (either optional or required) that would be implemented by the class which conforms to that protocol. While, delegate is the reference to that class which conforms to that protocol and will adhere to implement methods defined in protocol.
Is a protocol a requirement?
A protocol defines a blueprint of methods, properties, and other requirements that suit a particular task or piece of functionality. The protocol can then be adopted by a class, structure, or enumeration to provide an actual implementation of those requirements.
What is protocol and delegate method in Swift?
How will you explain the difference between delegate and protocol in Swift? Protocol: A set of methods that would be implemented by the class which conforms to that protocol. Delegate: The reference to that class which conforms to the protocol and will adhere to implement methods defined in the protocol.
What is protocol and delegate in Objective-C?
Protocols and Delegates are two related but different concept: A Protocol is a interface a class can conforms to, meaning that class implements the listed methods. A Delegate is typically an anonymous object that conforms to a protocol. The application of Delegate called Delegation is a design pattern.
How do you use protocols?
Protocol is used to specify particular class type property or instance property. It just specifies the type or instance property alone rather than specifying whether it is a stored or computed property. Also, it is used to specify whether the property is ‘gettable’ or ‘settable’.
Why are protocols needed?
Protocols provide us with a medium and set of rules to establish communication between different devices for the exchange of data and other services. Protocols are needed in every field like society, science & technology, Data Communication, media, etc.
Why do we need delegate in Swift?
A few reasons in favor of delegation: Delegation, and the delegation pattern, is a lightweight approach to hand-off tasks and interactions from one class to another. You only need a protocol to communicate requirements between classes. This greatly reduces coupling between classes.
Why protocols are used in Swift?
Protocols are used to define a “blueprint of methods, properties, and other requirements that suit a particular task or piece of functionality.” Swift checks for protocol conformity issues at compile-time, allowing developers to discover some fatal bugs in the code even before running the program.
What are protocols in C?
Objective-C allows you to define protocols, which declare the methods expected to be used for a particular situation. This chapter describes the syntax to define a formal protocol, and explains how to mark a class interface as conforming to a protocol, which means that the class must implement the required methods.
What is an example of protocol?
Protocols exist for several different applications. Examples include wired networking (e.g., Ethernet), wireless networking (e.g., 802.11ac), and Internet communication (e.g., IP). The Internet protocol suite, which is used for transmitting data over the Internet, contains dozens of protocols.
How do you create a protocol?
Creating a communication protocol
- Open the Applications Manager and select the application that you want.
- In the Organization Details window, choose the Communication tab.
- From the Communication Protocols list, select the Create New icon.
- Enter information in the applicable fields.
- Choose the Save icon.
What does a protocol do?
protocol, in computer science, a set of rules or procedures for transmitting data between electronic devices, such as computers. In order for computers to exchange information, there must be a preexisting agreement as to how the information will be structured and how each side will send and receive it.
What are protocols used for?
In networking, a protocol is a set of rules for formatting and processing data. Network protocols are like a common language for computers. The computers within a network may use vastly different software and hardware; however, the use of protocols enables them to communicate with each other regardless.
Is protocol an interface?
An interface defines how two entities may communicate. A protocol defines how they should communicate and what that communication means.