---
tags:
- Gogolook
type: slide
---

The Interface of Golang
===

---

* Clean Architecture
* Interface in Languages
* Java
* Ruby
* TypeScript
* Go
* [Using interfaces in Go the right way](https://medium.com/@mbinjamil/using-interfaces-in-go-the-right-way-99384bc69d39)
* Usage in Go

---

## Clean Architecture


Controller 透過 InputBoundary（介面） 把資料傳遞給 UseCase

---

### Java

package com.example.usecase;

public interface Input {
    public String Get() {}
    // ...
}

public class QueryInput implements Input {
    // ...
}

public class QueryUseCase {
    public void Get(Input input) {
        String id = input.Get("id");
        // ...
    }
}

---

### TypeScript

public interface Input {
    Get(): string
}

public class QueryInput implements Input {
    // ...
}

class QueryUseCase {
  public void Get(input: Input) {
      string id = input.Get("id")
  }
}

---

### Ruby

class QueryInput
  def get; end
end

class QueryUseCase
  def get(input)
    id = input.get("id")
  end
end

---

### Go

package usecase

type Input interface {
    Get() string
}

// ...
func (u *QueryUsecase) Get(input Input) {
    id := input.Get()
}

package controller

// ...
func (i *QueryInput) Get() string {
    // ...
}

---

## Usage in Go

* [Terraform Plugin](https://github.com/elct9620/terraform-provider-lambdalabs/blob/main/main.go#L29)
* [io](https://pkg.go.dev/io#ReadWriter)
* WRS Provider Interface