Summary - Select

Combine select, timeout and close to write a scheduler.

Summary - Select

In this section you learned select:

Wait on many channels with select and fair picking
Non-blocking with default for event loops
Timeout with time.After to prevent forever waits
Close a channel with close and end range

Now you will combine these to write a scheduler: select, timeout and close together.

Exercise Write a scheduler

Inside main, add a select { case ... default: ... } block and print scheduler with fmt.Println.

Show example solution

package main

import "fmt"

func main() {
    ch := make(chan string)
    select {
    case m := <-ch:
        fmt.Println(m)
    default:
        fmt.Println("zamanlayıcı")
    }
}

Exercise Scheduler output

Inside main, print select scheduler with fmt.Println.

Show example solution

package main

import "fmt"

func main() {
    fmt.Println("select scheduler")
}

Test yourself

select usage

select {
case v := <-ch:
    fmt.Println(v)
____:
    fmt.Println("zaman aşımı")
}

Show answer

select {
case v := <-ch:
    fmt.Println(v)
case <-time.After(1e9):
    fmt.Println("zaman aşımı")
}

Match section concepts

select

Multi-wait
default

Non-blocking
time.After

Timeout
close

Close

Next lesson: sync.Mutex

We Are Enhancing Your Experience

Cookie Preferences

Strictly Necessary Cookies

Analytical Cookies