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.
--
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.
