Interface Slices

A slice of interface values can hold different concrete types with shared behavior.

interface_slice.go

package main

import "fmt"

type Describer interface {
	Describe() string
}

type Task struct {
	Title string
}

func (t Task) Describe() string {
	return "task:" + t.Title
}

type User struct {
	Name string
}

func (u User) Describe() string {
	return "user:" + u.Name
}

func main() {
	var taskTitle = 
	items := []Describer{Task{Title: taskTitle}, User{Name: "Ada"}}

	for _, item := range items {
		fmt.Println(item.Describe())
	}
}

package main

import "fmt"

type Describer interface {
	Describe() string
}

type Task struct {
	Title string
}

func (t Task) Describe() string {
	return "task:" + t.Title
}

type User struct {
	Name string
}

func (u User) Describe() string {
	return "user:" + u.Name
}

func main() {
	var taskTitle = 
	items := []Describer{Task{Title: taskTitle}, User{Name: "Ada"}}

	for _, item := range items {
		fmt.Println(item.Describe())
	}
}

package main

import "fmt"

type Describer interface {
	Describe() string
}

type Task struct {
	Title string
}

func (t Task) Describe() string {
	return "task:" + t.Title
}

type User struct {
	Name string
}

func (u User) Describe() string {
	return "user:" + u.Name
}

func main() {
	var taskTitle = 
	items := []Describer{Task{Title: taskTitle}, User{Name: "Ada"}}

	for _, item := range items {
		fmt.Println(item.Describe())
	}
}

interface slice A slice typed as an interface can store any value that satisfies that interface.