The Way to Go/

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Anonymous Closure

Anonymous Closure

In this lesson there is a detailed description of how to use closures along with a channel.

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Passing anonymous closure through a channel

Functions are values in Go, and so are closures. So, we can construct a channel c, whose data type is a function, as in the following example:

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package main
import "fmt"
func prod(c chan func()) {
  f := <- c
  f()
  c <- nil
}
func main() {
  c := make(chan func())
  go prod(c)
  x := 0
  c <- func() { // puts a closure in channel c
    x++
  }
  fmt.Println(x)
}

The output of this program is 1. At line 11, you ...