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43 lines
696 B
Go
43 lines
696 B
Go
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// Copyright © 2016 Alan A. A. Donovan & Brian W. Kernighan.
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// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
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// See page 231.
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// Pipeline3 demonstrates a finite 3-stage pipeline
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// with range, close, and unidirectional channel types.
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package main
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import "fmt"
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//!+
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func counter(out chan<- int) {
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for x := 0; x < 100; x++ {
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out <- x
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}
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close(out)
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}
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func squarer(out chan<- int, in <-chan int) {
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for v := range in {
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out <- v * v
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}
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close(out)
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}
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func printer(in <-chan int) {
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for v := range in {
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fmt.Println(v)
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}
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}
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func main() {
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naturals := make(chan int)
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squares := make(chan int)
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go counter(naturals)
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go squarer(squares, naturals)
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printer(squares)
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}
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//!-
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