37 lines
644 B
Go
37 lines
644 B
Go
package main
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import "fmt"
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func main() {
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q := make(chan string, 3)
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fmt.Println("empty?", len(q) == 0)
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x := "black"
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fmt.Println("push", x)
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q <- x
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fmt.Println("empty?", len(q) == 0)
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select {
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case r := <-q:
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fmt.Println(r, "popped")
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default:
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fmt.Println("pop failed")
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}
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var n int
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for _, x := range []string{"blue", "red", "green"} {
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fmt.Println("pushing", x)
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q <- x
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n++
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}
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for i := 0; i < n; i++ {
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select {
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case r := <-q:
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fmt.Println(r, "popped")
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default:
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fmt.Println("pop failed")
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}
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}
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}
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