> For the complete documentation index, see [llms.txt](https://krjaeh0.gitbook.io/j-log/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://krjaeh0.gitbook.io/j-log/programming/languages/swift-and-ios/protocolorientedprogramming.md).

# ProtocolOrientedProgramming

* Swift는 프로토콜을 통해 강력한 프로토콜 지향 프로그래밍 패러다임을 지원합니다.
* 이를 통해 구조체, 클래스, 열거형 등이 프로토콜을 기반으로 유연하게 설계될 수 있습니다.
* 프로토콜을 채택함으로써 다양한 타입들이 프로토콜을 공통 인터페이스로 사용할 수 있어, 코드의 재사용성과 유지보수성이 향상됩니다. (다형성 지원)

### 예제

{% code title="Drivable.swift" %}

```swift
protocol Drivable
{
    func drive()
}

class Car: Drivable
{
    func drive()
    {
        print("Car is moving.")
    }
}

class Bicycle: Drivable
{
    func drive() {
        print("Bicycle is moving.")
    }
}

func startJourney(drivable: Drivable)
{
    drivable.drive()
}

let car = Car()
let bicycle = Bicycle()

startJourney(drivable: car)
startJourney(drivable: bicycle)
```

{% endcode %}

* 이 예에서 Drivable 프로토콜은 drive() 메서드를 요구하며, 다양한 타입(Car, Bicycle)이 이를 구현합니다.
* startJourney() 함수는 Drivable 프로토콜을 채택하는 모든 객체를 매개변수로 받아, 해당 타입에 맞는 drive() 메서드를 호출합니다.

### 관련 문서

[객체지향과 프로토콜 지향의 비교](broken://pages/d2f2c2bc2357f0e77ac109105cea42b94be8de7a)


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://krjaeh0.gitbook.io/j-log/programming/languages/swift-and-ios/protocolorientedprogramming.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.