How to Go
Tickers
Tickers are for when you want to do something repeatedly at regular intervals. Here's an example of a ticker that ticks periodically until we stop it.
Key Points
- Tickers are used to perform an action at regular intervals.
time.NewTicker()creates a new Ticker that contains a channelC.- The
Cchannel sends the time at each tick. - Tickers can be stopped by calling the
Stop()method. - It's important to stop tickers when they are no longer needed to prevent resource leaks.
Ticker Example
This example shows a ticker that ticks every 500 milliseconds. We stop it after 1600 milliseconds.
package main
import (
"fmt"
"time"
)
func main() {
ticker := time.NewTicker(500 * time.Millisecond)
done := make(chan bool)
go func() {
for {
select {
case <-done:
return
case t := <-ticker.C:
fmt.Println("Tick at", t)
}
}
}()
time.Sleep(1600 * time.Millisecond)
ticker.Stop()
done <- true
fmt.Println("Ticker stopped")
}Tick at ...
Tick at ...
Tick at ...
Ticker stoppedTicker Operations
| Operation | Syntax | Description |
|---|---|---|
| Create | ticker := time.NewTicker(duration) | Creates a new ticker. |
| Receive Tick | <-ticker.C | Blocks until the next tick. |
| Stop | ticker.Stop() | Stops the ticker, releasing associated resources. |