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A Tour of Go Methods
Go does not have classes. However, you can define methods on struct types.
The method receiver appears in its own argument list between the func keyword and the method name.
package main import ( "fmt" "math")type Vertex struct { X, Y float64}func (v *Vertex) Abs() float64 {//相当于给类添加方法 return math.Sqrt(v.X * v.X + v.Y * v.Y)}func main() { v := &Vertex{3, 4} fmt.Println(v.Abs())}
A Tour of Go Methods
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