Use Diff With generics

[AdamJSoftware]

I am trying to use diff with generics but I am encountering issues whenever I try to add Serializing and/or debug. Specifically, that

 the trait `Serialize` is not implemented for `<T as Diff>::Repr

Here is an example,

How would I get around this?

[benhall-7]

So here the issue is that when you take the diff of Script, the version field may or not be the same type as T. Instead it will have the type <T as Diff>::Repr, meaning whatever the type of struct the diff is. For example, if T were a HashMap or Vec, the diff of T (<T as Diff>::Repr) would be a totally different struct like HashMapDiff or VecDiff. You have to make sure that the T implements Diff, and that T::Repr implements Debug and Serialize. It would look close to this:

#[derive(Diff)]
struct ScriptSource;

#[derive(Diff)]
#[diff(attr(#[derive(Debug, Serialize)]))]
struct Script<T: Diff>
where
    <T as Diff>::Repr: Debug + Serialize,
{
    functions: Vec<String>,
    source: ScriptSource,
    version: T,
}

Does that clear it up?

[AdamJSoftware]

Yes it does!