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                #### 內存指針 ~~~ type Vertex struct { X int Y int } func main() { fmt.Println(Vertex{1, 2}) } ~~~ 一個結構體(`struct`)就是一個字段的集合。 type 的含義跟其字面意思相符 #### 結構體指針 ~~~ type Vertex struct { X int Y int } func main() { v := Vertex{1, 2} p := &v //把結構體的<引用>賦給變量p //fmt.Print(p)//打印出的值為 &{1 2} p.X = 33 //通過引用改變結構體里的X值 fmt.Println(v) } ~~~ ~~~ type Vertex struct { X, Y int } var ( v1 = Vertex{1, 2} // {1 2} 類型為 Vertex v2 = Vertex{X: 1} // {1 0} Y:0 被省略 v3 = Vertex{} // {0 0} X:0 和 Y:0 p = &Vertex{1, 2} // &{75 2} 類型為 *Vertex ) func main() { p.X = 75 fmt.Println(v1, v2, v3, p) } ~~~ 與內存指針不同的是,結構體指針更像是PHP中的引用
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