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Question

I want to create a slice that is a channel and contains integers.

test := make(chan []int)
test <- 5

This is the way I initialized it but I have no idea how to now pass a value since for slices we would use append but for channels we send data using <-

I have tried with both just <- and append and both combined like below and can't get it to work

test <- append(test, 5)

Answer 1

You defined a channel of []int but are trying to send it an int. You have to send it a slice of ints and then have the receiver use that slice.

A working example is here: https://play.golang.org/p/TmcUKU8G-1

Notice that I'm appending the 4 to the things slice and not the channel itself

package main

import (
    "fmt"
)

func main() {
    c := make(chan []int)

    things := []int{1, 2, 3}

    go func() {
        c <- things
    }()

    for _, i := range <-c {
        fmt.Println(i)
    }

    go func() {
        c <- append(things, 4)
    }()

    for _, i := range <-c {
        fmt.Println(i)
    }
}

Output:

1
2
3
1
2
3
4