Glad I could help. I also enjoy using package reflect very much, it makes
up for the lack of generics very well in certain situations.
By the way, to copy things into a pointer with reflection you normally do
p.Elem().Set(anotherValue).
In this case it wasn't necessary, since New already returns a pointer to a
zero value.
Make sure to read the following article to learn about addressability and
assignability, if you haven't already:
https://blog.golang.org/laws-of-reflection
On Monday, September 5, 2016 at 10:34:16 PM UTC+2, dc0d wrote:
>
> You're awesome! And Go's reflection is much better than what I've expected
> - and yes, I like it, I use it!
>
> On Tuesday, September 6, 2016 at 12:57:45 AM UTC+4:30, Roberto Zanotto
> wrote:
>>
>> If you want a pointer instead of the direct value, just use New instead
>> of Zero:
>> v = reflect.New(fd.Type().Elem()).Interface()
>>
>> On Monday, September 5, 2016 at 9:30:13 PM UTC+2, dc0d wrote:
>>>
>>> Exactly! Thanks! Now, how to put it inside the pointer? I mean, how to
>>> get it's address and put that address inside the pointer variable?
>>>
>>> On Monday, September 5, 2016 at 10:47:23 PM UTC+4:30, Roberto Zanotto
>>> wrote:
>>>>
>>>> I should learn to read the questions more carefully before answering -_-
>>>> In the code you commented out, fd.Type() is a pointer type, so the zero
>>>> value of a pointer type is a nil pointer.
>>>> If you do fd.Type().Elem() it gives you the "dereferenced" type of the
>>>> value.
>>>> So, maybe you want:
>>>> v = reflect.Zero(fd.Type().Elem()).Interface()
>>>>
>>>> On Monday, September 5, 2016 at 7:28:13 PM UTC+2, dc0d wrote:
>>>>>
>>>>> How can I fill a pointer to point to the zero value of underlying type?
>>>>>
>>>>> Like in:
>>>>>
>>>>> if fd.Kind() == reflect.Ptr {
>>>>> if fd.IsNil() {
>>>>> // how to set v (pointer) to point to a zero value of underlying
>>>>> type?
>>>>> // using this:
>>>>> // v = reflect.Zero(fd.Type()).Interface()
>>>>> // still gives a nil value.
>>>>> } else {
>>>>> v = fd.Interface()
>>>>> }
>>>>> }
>>>>>
>>>>>
>>>>>
>>>>> I want to fill v with the zero value of the underlying direct type.
>>>>>
>>>>
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