Learn X By Example
Learn X By Example

    Go by Example: Range over Channels

    Go by Example : Range over Channels

    In a previous example 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)

    This range iterates over each element as it’s received from queue . Because we close d the channel above, the iteration terminates after receiving the 2 elements.

        for elem := range queue {
        fmt.Println(elem)
    }
}
    $ go run range-over-channels.go
one
two

    This example also showed that it’s possible to close a non-empty channel but still have the remaining values be received.

    Next example: Timers .

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