On Saturday, August 27, 2016 at 1:34:42 AM UTC+8, Michael Jones wrote:
>
> package main
>
>
>
> import "fmt"
>
> import "unsafe"
>
>
>
> type Age int
>
>
>
> func main() {
>
> var ages = []Age{17, 18, 19}
>
> var ints = *(*[]int)(unsafe.Pointer(&ages))
>
> fmt.Println(ints)
>
> }
>
Looks effortless for compiler to do this without using the unsafe package.
>
>
> *From: *<[email protected] <javascript:>> on behalf of T L <
> [email protected] <javascript:>>
> *Date: *Friday, August 26, 2016 at 10:11 AM
> *To: *golang-nuts <[email protected] <javascript:>>
> *Cc: *<[email protected] <javascript:>>
> *Subject: *Re: [go-nuts] Why can't convert []T to []T2 if T2 is a copy
> definition of T?
>
>
>
>
>
> On Saturday, August 27, 2016 at 12:36:58 AM UTC+8, Axel Wagner wrote:
>
> There is none. It would be perfectly possible and reasonable to make this
> possible, but it probably didn't seem worth the effort to introduce this
> special case into the language which has such a limited use. If you can't
> live without, you can always use unsafe to do it yourself (though, of
> course, that's unsafe).
>
>
> What effort needs to make to convert []Age into []int?
>
>
>
>
> On Fri, Aug 26, 2016 at 6:09 PM, T L <[email protected]> wrote:
>
>
>
> On Saturday, August 27, 2016 at 12:05:28 AM UTC+8, Jan Mercl wrote:
>
>
>
> On Fri, Aug 26, 2016, 17:59 T L <[email protected]> wrote:
>
>
>
>
>
> --
>
>
> why the underlying types of []Age and []int are not the same.
>
>
>
> The underlying type of an anonymous type []T is []T.
>
>
>
>
>
>
> What are differences between memory layouts of []Age and []int?
>
>
> --
>
> -j
>
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