package main import ( "fmt" "reflect" ) type T1 struct { Name string Age int Arr [2]bool ptr *int slice []int map1 map[string]string } func main() { t1 := T1{ Name: "yxc", Age: 1, Arr: [2]bool{true, false}, ptr: new(int), slice: []int{1, 2, 3}, map1: make(map[string]string, 0), } t2 := T1{ Name: "yxc", Age: 1, Arr: [2]bool{true, false}, ptr: new(int), slice: []int{1, 2, 3}, map1: make(map[string]string, 0), } // 报错 实例不能比较 Invalid operation: t1 == t2 (operator == not defined on T1) // fmt.Println(t1 == t2) // 指针可以比较 fmt.Println(&t1 == &t2) // false fmt.Println(reflect.DeepEqual(t1, t2)) // true t3 := &T1{ Name: "yxc", Age: 1, Arr: [2]bool{true, false}, ptr: new(int), slice: []int{1, 2, 3}, map1: make(map[string]string, 0), } t4 := &T1{ Name: "yxc", Age: 1, Arr: [2]bool{true, false}, ptr: new(int), slice: []int{1, 2, 3}, map1: make(map[string]string, 0), } fmt.Println(t3 == t4) // false fmt.Println(reflect.DeepEqual(t3, t4)) // true fmt.Printf("%p, %p \n", t3, t4) // 0xc000046050, 0xc0000460a0 fmt.Printf("%p, %p \n", &t3, &t4) // 0xc000006030, 0xc000006038 // 前面加*，表示指针指向的值，即结构体实例，不能用== // Invalid operation: *t3 == *t4 (operator == not defined on T1) // fmt.Println(*t3 == *t4) t5 := t3 fmt.Println(t3 == t5) // true fmt.Println(reflect.DeepEqual(t3, t5)) // true fmt.Printf("%p, %p \n", t3, t5) // 0xc000046050, 0xc000046050 fmt.Printf("%p, %p \n", &t3, &t5) // 0xc000006030, 0xc000006040 }