2022-07-04：以下go语言代码输出什么？A：true；B：false；C：编译错误。

package main

import "fmt"

func main() {
    fmt.Println(func() {} == func() {})
}

答案2022-07-04：

答案选C。Slice, map, and function values are not comparable. However, as a special case, a slice, map, or function value may be compared to the predeclared identifier nil.

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