Thanks both!
On Saturday, June 3, 2017 at 5:22:20 PM UTC-7, Xio Fen wrote:
>
> To answer the first point - the keyword is "*assignable*" here - an slice
> []int{1,23} is not assignable to a slice []I where I is a type of int. See
> https://golang.org/ref/spec#Assignability
>
> ( also golang treats slices as types in themselves ie
> https://golang.org/ref/spec#SliceType )
>
> ..However..
>
> This or very similar has definitely been asked before (including by me I'm
> sure, maybe I should try to find the thread) - it does seem reasonable and
> useful - but it doesn't work (and may never)
>
> for example your suggestion would work very well with the whole fmt
> package - which often takes []interface as parameters, and then reflects on
> that array to find type .. however passing []int etc doesn't currently
> work, and requires an 'annoying' intermediate assign of each element to the
> interfacial struct.
>
> Some links to previous discussions (of the more general case using
> []interface{} as the receiving type)
>
> https://groups.google.com/forum/#!topic/golang-nuts/0qWnorUuct8
>
> and
>
> https://groups.google.com/forum/#!topic/golang-nuts/yZqFmd7z82Y
>
> had reasonable discussions - the second also points out that this is
> covered in the FAQ - maybe around here
> https://golang.org/doc/faq#convert_slice_of_interface
>
>
> Personally I'd like to see this implemented too - it has good use.
>
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