There have been multiple long discussions about converting []foo to
[]interface{} in this group. It is not possible. Most of the discussions
apply just as well to your case.
If you really need a "generic" function that does this, and can't convert
as suggested by Louki, then you could use reflection. The function would be
"func sortedKeys(theMap interface{})", then it would have to dig down
manually. This would be difficult to write if you are reflection novice. It
would also be much, much less efficient than the other options.
On Saturday, March 2, 2019 at 8:10:06 AM UTC-5, 김용빈 wrote:
>
> yes I can do this in a for loop. but that is not I want.
>
> what I really want to do is "create a function that returns sorted
> []string keys from any map[string]... in type safe way".
>
> when I said 'there is no easy way...' , I mean I cannot create that
> function easily.
>
> I did not very clarify. sorry for the confusion.
>
> 2019년 3월 2일 토요일 오후 8시 46분 50초 UTC+9, Louki Sumirniy 님의 말:
>>
>> Only an assigment to a pre-declared map[string]interface{} in a loop
>> walking the first layer of that complex map type is required to put the
>> values into that type, it's not complicated and doesn't have to touch the
>> template. Something like this:
>>
>> var MapStringInterface map[string]interface{}
>> for i,x := range MapStringMapStringThing {
>> MapStringInterface[i]=x
>> }
>>
>> On Saturday, 2 March 2019 11:01:10 UTC+1, 김용빈 wrote:
>>>
>>> Thank you, Mercl.
>>>
>>> So there isn't an easy way, you mean, right?
>>>
>>> 2019년 3월 2일 토요일 오후 6시 45분 8초 UTC+9, Jan Mercl 님의 말:
>>>>
>>>> On Sat, Mar 2, 2019 at 10:32 AM 김용빈 <kyb...@gmail.com> wrote:
>>>>
>>>> > but it seems the argument is not automatically converted.
>>>>
>>>> Things are automatically converted to a different type in Go only when
>>>> they are assigned to, or passed as arguments of, interface types.
>>>>
>>>> > manual type cast `map[string]interface{}(myMap)` also not working.
>>>> > is there a way of doing this?
>>>>
>>>> Go does not have casts. Conversion rules[0] do not allow a conversion
>>>> of different map types because the memory layouts are not compatible.
>>>>
>>>> [0]: https://golang.org/ref/spec#Conversions
>>>>
>>>> --
>>>>
>>>> -j
>>>>
>>>
--
You received this message because you are subscribed to the Google Groups
"golang-nuts" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to golang-nuts+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
