Did you try something like this? What errors did you get?
type Event interface {
...
}
type EventImpl struct {
...
}
eventSlice:=make([]Event,0)
eventMap:=make(map[string]Event)
event:=&EventImpl{}
eventSlice=append(eventSlice,event)
eventMap["key"]=event
On Thu, Aug 30, 2018 at 10:57 AM Eric Raymond <e...@thyrsus.com> wrote:
>
> I apologize if this seems like an elementary question, but web searches and
> reading the Go documentation is not turning up an answer.
>
> I'm in the process of translating reposurgeon, an editor for version-control
> histories, from Python into Go for improved performance, .The central data
> structure is Repository, which consists mainly of a list of events such as
> commits and tags. In Python, I use the language's late binding and simply
> declare a list of containing multiple object types named Commit, Tag, etc.
> There are also a number of lookup maps pointing at objects in the main event
> list. Because objects in Pytron are passed by reference everything is fairly
> straightforward.
>
> I'm trying to translate this to Go in a type-safe way. To do this, I need to
> be able to write two declarations: "Slice of pointers to objects satisfying
> the Event interface" and "map of string keys to pointers to objects
> satisfying the Event interface". My attempts so far have yielded very
> cryptic error messages and no success.
>
> Is it actually possible to restrict the main list's polymorphism in this way
> and avoid casts?
>
>
>
>
>
>
>
>
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