It is possible to pass pointer over channel in go lang? I need to pass struct, do changes in it and have theese changes in the same function from where struct was passed?
I tried
chan <- &data
and I got
# command-line-arguments .\o.go:130: cannot use &duom[i] (type *KaVartoti) as type KaVartoti in send
after this I tried
chan <- *data
and I got
# command-line-arguments .\o.go:130: invalid indirect of duom[i] (type KaVartoti)
So, it is possible to send pointer through channel in Go ir not?
Sure you can, e.g.
package main
type Data struct {
i int
}
func func1(c chan *Data ) {
for {
var t *Data;
t = <-c //receive
t.i += 10 //increment
c <- t //send it back
}
}
func main() {
c := make(chan *Data)
t := Data{10}
go func1(c)
println(t.i)
c <- &t //send a pointer to our t
i := <-c //receive the result
println(i.i)
println(t.i)
}
See in Go Playground.
The error you get tells you that your channel takes a KaVartoti struct, you'll have to create a channel of KaVartoti pointers (a chan *KaVartoti
).
At a guess, your duom
variable is an array/slice, so if you want to send a pointer to one of the elements, you'd use your first approach of &duom[i]