My gut feeling is that there is an elegant way to achieve what you want.
Unfortunately, I am having trouble following the code you are describing,
and more importantly, what you are actually trying to accomplish. Perhaps
it is my failing.
If you would post a more complete example, showing the relevant code in all
the related packages, I suspect you would get constructive suggestions.
- Jake
On Saturday, April 21, 2018 at 7:51:55 AM UTC-4, Kaveh Shahbazian wrote:
>
> Regarding "Accept interfaces, return concrete types", how can it be
> applied for structs that represent a payload/value?
>
> For example in package first, logger is defined as:
>
> type logger interface {
> Debugf(template string, args ...interface{})
> Errorf(template string, args ...interface{})
> Infof(template string, args ...interface{})
> }
>
> And package first only accepts a logger that implements the logger
> interface.
>
> Now lets assume there is a need for passing a struct too, like some config
> or state.
>
> This causes importing the original package that, that config or state
> struct resides in; while package first is happily accepting other things
> from that package using interfaces.
>
> For example in package second there is some tool that is represented using
> this interface in package first:
>
> type cloner interface {
> Clone() (*second.State, error)
> }
>
>
> As it can be seen, now package first has to explicitly import package
> second, because of the type *second.State.
>
> Currently I break things by renaming the second package to something
> meaningless when importing like:
>
> type cloner interface {
> Clone() (*p2nd.State, error)
> }
>
> But this is not really a work around and package second leaks into the
> scope of package first anyway.
>
> Is there a way to actually achieve this?
>
--
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 [email protected].
For more options, visit https://groups.google.com/d/optout.
