struct比较

从下面代码可以看出：
1、相同实例的可以比较，但不能含有不可比较的结构体成员(切片和map)，可以强转为同一结构体的也可以比较
2、struct不能作为map的key

package main

import (
    "fmt"
    "reflect"
)

type Comp1 struct {
    Age  int
    Name string
}

type Comp2 struct {
    Age  int
    Name string
    Ms   []int // (struct containing []int cannot be compared)
    Ks   map[string]string
}

type Comp3 struct {
    Age  int
    Name string
    Ms   [2]bool //[]boolb不可以比较,[2]bool可以比较（切片和map不能比较）
}

type Comp4 struct {
    Age  int
    Name string
    Ms   [2]bool
}

func main() {
    t1 := Comp1{Age: 20, Name: "wangwang"}
    t2 := Comp1{Age: 27, Name: "mht"}
    fmt.Println("same ?", reflect.DeepEqual(t1, t2))
    fmt.Println("same ?", t1 == t2)
    fmt.Println("same ?", &t1 == &t2)
    t3 := Comp2{Age: 20, Name: "wangwang"}
    t4 := Comp2{Age: 27, Name: "mht"}
    fmt.Println("same ?", reflect.DeepEqual(t3, t4))
    t3 = Comp2{Age: 20, Name: "wangwang"}
    t4 = Comp2{Age: 20, Name: "wangwang"}
    t5 := t3
    fmt.Println("same ?", reflect.DeepEqual(t3, t4))
    //fmt.Println("same ?", t3 == t4 )
    fmt.Println("same ?", &t3 == &t4)
    fmt.Println("same ?", reflect.DeepEqual(t3, t5))
    fmt.Println("same ?", &t3 == &t5)
    //fmt.Println("same ?", t3 == t1 )//(mismatched types Comp2 and Comp1)
    t6 := Comp3{Age: 20, Name: "wangwang"}
    t7 := Comp4{Age: 20, Name: "wangwang"}
    //fmt.Println("same ?", t7 == t6)//(mismatched types Comp4 and Comp3)
    fmt.Println("same ?", t7 == Comp4(t6))
    fmt.Println("same ?", reflect.DeepEqual(t6, t7))

    //m := make(map[Comp4]int)//type Comp4 is not an expression
    //m[Comp4]++
    //fmt.Println(m[t7])
}