I thought of this at the beginning, but when I tried to make it work I
realized that I needed to have the following if:
if s != nil {
/* initialize struct or inform it is nil */
}
on every struct method, which eventually defeated the purpose for my use
case.
Out of curiosity: Could you please tell when calling methods on nil
pointers is useful?
El sábado, 15 de febrero de 2020, 13:51:32 (UTC), Tristan Colgate escribió:
>
> It's also worth pointing out that a nil pointer value can still be useful.
> You can still call methods on it.
>
> On Sat, 15 Feb 2020, 13:13 , <klos...@gmail.com <javascript:>> wrote:
>
>> Woah! that's a killer reason, the one I was searching for. Thanks for
>> pointing it out, as you have saved me a lot of time discarding the proposal
>> I had in mind.
>>
>> I will need to go in other direction.
>>
>> El viernes, 14 de febrero de 2020, 15:52:07 (UTC), Brian Candler escribió:
>>>
>>> In addition, consider: how would you implement the zero default when
>>> the type is self-referential? For example:
>>>
>>> type Treenode struct {
>>> left *Treenode
>>> right *Treenode
>>> }
>>>
>>> var Tree1, Tree2 *Treenode
>>>
>>> Also consider deeply nested types which include pointers to structs
>>> which contain pointers etc.
>>>
>>> You can design a language where pointers can never be nil - but then you
>>> have to deal with "does not point to anything" some other way (e.g. Maybe
>>> values). That ends up with a very different language.
>>>
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