andrey.go

package main

import (
	"fmt"
)

type whyNeedPointer struct {
	Do func(string) 
}

func main() {
	doStuff := func(s string) {
		fmt.Println(s)
	}
	w := whyNeedPointer{
		Do: doStuff,
	}
	w.Do("why need ptr?")
	
	nextDo := make(chan func(string))
	go func() {
		nextDo <- func(s string) {
			fmt.Printf("next %s\n", s)
		}
	}()
	w.Do = <-nextDo
	w.Do("time no use ptr")
}