Generics programming using soa-derive about soa-derive

[Luthaf]

Hey! I never used this code in a generic context, so I'm not sure if there is a workaround for the lack of associated methods.

StructOfArray::Type was added by @mikialex who wanted to do something similar in #24/#25. Maybe they have more idea about how to achieve this?

[Alexandre425]

I made some progress in realizing the type refers to the derived CheeseVec, and so my implementation now looks like this:

pub struct SparseSet<T: StructOfArray> {
    dense: Vec<EntID>,
    sparse: Vec<u32>,
    data: <T as StructOfArray>::Type,
}

However, this still will not allow me to have generic implementations, as the following errors:

pub fn new() -> Self {
    Self {
        dense: Vec::new(),
        sparse: Vec::new(),
        data: <T as StructOfArray>::Type::new(),
    }
}

error[E0599]: no function or associated item named new found for associated type <T as StructOfArray>::Type in the current scope

Do I have any alternatives? Any trait that implements the methods I need, so that I can have generic implementations?

[Alexandre425]

I see, I did find that PR, that commit was what helped me figure out part of it. If @mikialex can let me know if they've ever done generic implementations using their contribution, that would be really helpful. Otherwise I suppose I will look for an alternative, macros perhaps.