39 lines
No EOL
818 B
Go
39 lines
No EOL
818 B
Go
package main
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import (
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"fmt"
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"time"
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)
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//Go's select lets you wait on multiple channel
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//operations combining goroutines and channels with select
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//is a powerful feature of go
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func main(){
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//For our example well select across two channels.
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c1 := make(chan string)
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c2 := make(chan string)
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//each channel will receive a value after some
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//amount of time, to simulate e.g. blocking RPC
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//operations executing in concurrent goroutines
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go func(){
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time.Sleep(1*time.Second)
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c1 <- "one"
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}()
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go func(){
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time.Sleep(2*time.Second)
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c2 <- "two"
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}()
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//we'll use select to await both of these values
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//simultaneously, printing each one as it arrives.
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for i := 0; i < 2; i++ {
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select{
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case msg1 := <-c1:
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fmt.Println("received", msg1)
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case msg2 := <-c2:
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fmt.Println("received", msg2)
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}
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}
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} |