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Title: 31.Range_Over_Channels.go
Author: OpenSource
Date: 2017-05-21
Description: For Study
In a previous example[exam-11] we saw how for and range provide iteration over basic data structures.
We can also use this syntax to iterate over values received from a channel.
package main
import "fmt"
func main(){
// We’ll iterate over 2 values in the queue channel.
queue := make(chan string, 2)
queue <- "one"
queue <- "two"
close(queue) // buffer close
// This range iterates over each element as it’s received from queue.
// Because we closed the channel above, the iteration terminates after receiving the 2 elements.
for elem := range queue{
// This example also showed
// that it’s possible to close a non-empty channel
// but still have the remaining values be received.
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