Source file tour/methods/indirection.go

     1  // +build OMIT
     2  
     3  package main
     4  
     5  import "fmt"
     6  
     7  type Vertex struct {
     8  	X, Y float64
     9  }
    10  
    11  func (v *Vertex) Scale(f float64) {
    12  	v.X = v.X * f
    13  	v.Y = v.Y * f
    14  }
    15  
    16  func ScaleFunc(v *Vertex, f float64) {
    17  	v.X = v.X * f
    18  	v.Y = v.Y * f
    19  }
    20  
    21  func main() {
    22  	v := Vertex{3, 4}
    23  	v.Scale(2)
    24  	ScaleFunc(&v, 10)
    25  
    26  	p := &Vertex{4, 3}
    27  	p.Scale(3)
    28  	ScaleFunc(p, 8)
    29  
    30  	fmt.Println(v, p)
    31  }
    32  

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