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https://gitee.com/shikong-sk/golang-study
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27 lines
530 B
Go
27 lines
530 B
Go
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package main
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import "fmt"
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type Person struct {
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Name string
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age int
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}
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// 构造函数 约定成俗 使用 New 开头
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// 返回结构体 因结构体为值类型 赋值的时候都是 拷贝 内存开销大
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// 返回结构体指针 当结构体比较大时 使用结构体指针 减少内存开销
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func NewPerson(name string, age int) *Person {
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return &Person{
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name,
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age,
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}
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}
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func main() {
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p1 := NewPerson("张三", 20)
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p2 := NewPerson("李四", 18)
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fmt.Printf("%T %#v\n", p1, p1)
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fmt.Printf("%T %#v\n", p2, p2)
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}
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