Learn X By Example
Learn X By Example

    Go by Example: Channel Buffering

    Go by Example : Channel Buffering

    By default channels are unbuffered , meaning that they will only accept sends ( chan <- ) if there is a corresponding receive ( <- chan ) ready to receive the sent value. Buffered channels accept a limited number of values without a corresponding receiver for those values.

    package main
    import "fmt"
    func main() {

    Here we make a channel of strings buffering up to 2 values.

        messages := make(chan string, 2)

    Because this channel is buffered, we can send these values into the channel without a corresponding concurrent receive.

        messages <- "buffered"
    messages <- "channel"

    Later we can receive these two values as usual.

        fmt.Println(<-messages)
    fmt.Println(<-messages)
}
    $ go run channel-buffering.go 
buffered
channel

    Next example: Channel Synchronization .

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