[]
the value is nil
not nil 1. Why is not nil?
2 printed in Console? How to realize that nil? can be printed out in Console (that"s why interface {} is used because of the need for a general method.)
[]
the value is nil
not nil 1. Why is not nil?
2 printed in Console? How to realize that nil? can be printed out in Console (that"s why interface {} is used because of the need for a general method.)
API interface, including two aspects
judge that data interface {} = = nil, should satisfy both aspects.
in your example, type is valuable, value = = nil
this corresponds to reflect.TypeOf and reflect.ValueOf methods
is there any other way besides reflection?
func Console(data interface{}) {
v := reflect.ValueOf(data)
if(v.IsNil()){
fmt.Println("is nil")
}else{
fmt.Println("not nil")
}
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