I'm curious of the conversion of interfaces. Here is the
example http://play.golang.org/p/i0cOBhpAym
    In that example,
      interface B defines a method returning an interface A, and
      struct C implement a method returning a pointer to struct CA which
implements interface A.

    I wonder why Go can't deduce interface B from C.
    If *interface A, B* and *struct C, CA* are in different package, then
the only way to make it possible is either
     - refine the method of *C.Get* to *func Get() A*, this means I need to
import the definition of interface A from other package and introduce more
dependency, or
     - refine the method *Get* of C and B to *func Get() interface{}*

    Can anyone give me some hint or clue?

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postedJul 29, '15 at 2:14p
activeJul 30, '15 at 4:59a



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