2022-06-28：以下golang代码输出什么？A：true；B：false；C：panic；D：编译失败。 package main import “fmt“ func main() {

Posted 2022-06-30 福大大架构师每日一题

2022-06-28：以下golang代码输出什么？A：true；B：false；C：panic；D：编译失败。

package main

import "fmt"

func main() 
    var p [100]int
    var m interface = [...]int99: 0
    fmt.Println(p == m)

答案2022-06-28：

答案选A。这道题以为选D，有点出乎意料。儿子属于老子，儿子们不属于老子们。只适合赋值，不适合比较。

A value x of non-interface type X and a value t of interface type T are comparable when values of type X are comparable and X implements T. They are equal if t’s dynamic type is identical to X and t’s dynamic value is equal to x. ——以上内容来自 https://go.dev/ref/spec#Operators