What are some examples of interfaces in Go?

What are some examples of interfaces in Go?

In Go, an interface is a type that specifies a contract by defining methods. For example, you can define an interface called Shape with methods like Area() and Perimeter().

Can you show me a code example of an interface in Go?

Sure! Here's a simple example:

package main

import "fmt"

type Shape interface {
    Area() float64
    Perimeter() float64
}

type Rectangle struct {
    Width, Height float64
}

func (r Rectangle) Area() float64 {
    return r.Width * r.Height
}
}

func (r Rectangle) Perimeter() float64 {
    return 2 * (r.Width + r.Height)
}

func main() {
    var s Shape = Rectangle{Width: 10, Height: 5}
    fmt.Println("Area:", s.Area())
    fmt.Println("Perimeter:", s.Perimeter())
}

What are the benefits of using interfaces in Go?

Interfaces in Go promote loose coupling and allow for polymorphism. They enable you to write more flexible and reusable code.

Can interfaces be embedded in other interfaces?

Yes, interfaces can be embedded in other interfaces, allowing you to create more complex types that combine multiple behaviors.