Go - Using interfaces
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// Example of using interface
// Author: http://github.com/klassmann
package main
import (
"fmt"
)
type Runner interface {
Execute() bool
}
type Job struct {
Data string
IsRunning bool
}
func (j Job) Execute() bool {
fmt.Printf("Executing Job[%s]...", j.Data)
return j.IsRunning
}
type Task struct {
Name string
}
func (t Task) Execute() bool {
fmt.Printf("The Task[%s] is executing...", t.Name)
return true
}
// Using inteface, you can pass any type that implements a method
// like Execute() bool, it is called "implicity implementation"
// https://tour.golang.org/methods/10
func runProcess(r Runner) {
if r.Execute() {
fmt.Printf("Done.\n")
} else {
fmt.Printf("Fail.\n")
}
}
func main() {
fmt.Println("Job and Task processor!")
j1 := Job {Data: "Job 1", IsRunning: true}
j2 := Job {Data: "Job 2", IsRunning: false}
j3 := Job {Data: "Job 3", IsRunning: true}
t1 := Task {Name: "Task 1"}
t2 := Task {Name: "Task 2"}
t3 := Task {Name: "Task 3"}
runProcess(j1)
runProcess(j2)
runProcess(j3)
runProcess(t1)
runProcess(t2)
runProcess(t3)
}
Go
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