go 語言學習十 - 通道

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package mainimport ("fmt""math")/**c <- answers(chan) <- (cartesian struct) goroutine (polarCoord struct) <- questions(chan) <- polar{5, 30.5} */func main() {questions := make(chan polar)defer close(questions)answers := make(chan cartesian)defer close(answers)go func() {for {p := <-questionsradian := p.angle * math.Pi / 180.0 //弧度x := p.radius * math.Cos(radian)y := p.radius * math.Sin(radian)answers <- cartesian{x, y}}}()questions <- polar{5, 30.5}c := <-answersfmt.Printf("(%.3f,%.3f)", c.x, c.y)}func process (questions chan polar, answers chan cartesian){}type cartesian struct {x float64y float64}type polar struct {radius float64angle  float64 //角度}

go 語言學習十 - 通道