mirror of
https://github.com/crazybber/awesome-patterns.git
synced 2024-11-30 00:46:08 +03:00
34 lines
627 B
Go
34 lines
627 B
Go
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// Basic sends and receives on channels are blocking.
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// However, we can use `select` with a `default` clause to
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// implement _non-blocking_ sends, receives, and even
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// non-blocking multi-way `select`s.
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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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func main() {
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ch1 := make(chan int)
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ch2 := make(chan int)
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go func(ch chan int) { <-ch }(ch1)
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go func(ch chan int) { ch <- 2 }(ch2)
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time.Sleep(time.Second)
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for {
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select {
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case ch1 <- 1:
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fmt.Println("Send operation on ch1 works!")
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case test := <-ch2:
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fmt.Println("Receive operation on ch2 works!", test)
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default:
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fmt.Println("Exit now!")
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return
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}
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}
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}
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