True, but it would still be just the same loop, it wouldn't actually be
significantly faster. And you'd need to put quite some machinery into a
pretty rarely used functionality, which means it also wouldn't be cleaner.
The thing is, that the memory representation of []T and []J, with J being
an interface type, is very different form each other and differs also for
each (T, J) pair, AIUI. So you can't really efficiently generalize this.
The only thing it could possibly safe you, is writing the actual loop and
in general go doesn't really do this kind of tradeoff (saving small amounts
of trivial work by complicating the language and -implementation).
On Wed, Aug 3, 2016 at 5:19 PM, T L <tapir....@gmail.com> wrote:
>
>
> On Wednesday, August 3, 2016 at 10:54:29 PM UTC+8, Axel Wagner wrote:
>>
>> Why is converting it in a loop "neither clean nor efficient"? It seems to
>> be both to me: a) It's clean, as it's type-safe, so much less can go wrong
>> and it's obvious what it does and b) it's efficient, becaue a func([]T)
>> []interface{} would need to use reflection, just to also have the same loop
>> (but a less efficient one, as every operation would need to reflect). So,
>> writing a loop would, in fact, be *more* efficient and clean than a
>> function.
>>
>
> If the functionality is provided by builltin package, the reflection is
> not needed, just like the copy builtin function.
>
>
>>
>> On Wed, Aug 3, 2016 at 4:35 PM, T L <tapi...@gmail.com> wrote:
>>
>>> Often, I need converting a []T to []interface{} to use the []interface
>>> as a variable length parameter.
>>> But converting a []T for []interface{} in a for loop is neither clean
>>> nor efficient.
>>>
>>> So is there a function in standard lib to convert []T to a []interface{}?
>>>
>>> --
>>> 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...@googlegroups.com.
>>> For more options, visit https://groups.google.com/d/optout.
>>>
>>
>> --
> 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.
>
--
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.
