Golang 类型断言

package mian

import "fmt"

type Point struct {
    x int
    y int
}

func main() {
    var a interface{}
    var point Point = Point{1, 2}
    a = point
    var b Point
    b = a
    fmt.Println(b)
}

package mian

import "fmt"

type Point struct {
    x int
    y int
}

func main() {
    var a interface{}
    var point Point = Point{1, 2}
    a = point
    var b Point
    b = a.(Point) //类型断言
    fmt.Println(b)
}

package mian

import "fmt"

type Point struct {
    x int
    y int
}

func main() {
    //类型断言（带检测）
    var x interface{}
    var b2 float32 = 1.1
    x = b2
    y,ok := x.(float64)
    if ok == true {
        fmt.Println("convert success")
        fmt.Printf("y 的类型是 %T 值是=%v",y,y)
    }else{
        fmt.Println("convert fail")
    }
    
}