understanding context.context go
package main
import "fmt"
//prints to stdout and puts an int on channel
func printHello(ch chan int) {
fmt.Println("Hello from printHello")
//send a value on channel
ch <- 2
}
func main() {
//make a channel. You need to use the make function to create channels.
//channels can also be buffered where you can specify size. eg: ch := make(chan int, 2)
//that is out of the scope of this post.
ch := make(chan int)
//inline goroutine. Define a function and then call it.
//write on a channel when done
go func(){
fmt.Println("Hello inline")
//send a value on channel
ch <- 1
}()
//call a function as goroutine
go printHello(ch)
fmt.Println("Hello from main")
//get first value from channel.
//and assign to a variable to use this value later
//here that is to print it
i := <- ch
fmt.Println("Recieved ",i)
//get the second value from channel
//do not assign it to a variable because we dont want to use that
<- ch
}