Debouncing function calls in Golang

debounce.go

// You can edit this code!
// Click here and start typing.
package main

import (
	"fmt"
	"time"
)

func main() {
	fmt.Println("Hello, 世界")

	iChan := make(chan any)
	go debounce(iChan, 3*time.Second, print)

	count := 0
	for {
		if count > 8 {
			return
		}
		count++
		iChan <- count
		time.Sleep(1 * time.Second)
		fmt.Println(count)
	}
}

func print(i any) {
	fmt.Println("called", i)
}

func debounce(c chan any, timeout time.Duration, b func(any)) {
	a := <-c
	b(a)
	lastCall := time.Now()
	for {
		a := <-c
		if time.Since(lastCall) < timeout {
			timer := time.NewTimer(timeout - time.Since(lastCall))
			called := false
			for {
				select {
				case newA := <-c:
					a = newA
				case <-timer.C:
					b(a)
					lastCall = time.Now()
					called = true
				}
				if called {
					break
				}
			}
		} else {
			lastCall = time.Now()
			b(a)
		}
	}
}