support kwargs in update_coefficients!

[vpuri3]

CalculustJL/CalculustCore.jl#26

[ChrisRackauckas]

That wouldn't be possible, because nothing could pass kwargs 😅

[vpuri3]

i dont follow. would the following not work?

update_coefficients!(L, u, p, t; kwargs...) = nothing
DEFAULT_UPDATE_FUNC(A, u, p, t; kwargs...) = A
function update_coefficients!(L::AbstractSciMLOperator, u, p, t; kwargs...)
    for op in getops(L)
        update_coefficients!(op, u, p, t; kawgs...)
    end
    nothing
end

struct MatrixOperator{T,AType<:AbstractMatrix{T},F} <: AbstractSciMLLinearOperator{T}
    A::AType
    update_func::F
    MatrixOperator(A::AType; update_func=DEFAULT_UPDATE_FUNC) where{AType} =
        new{eltype(A),AType,typeof(update_func)}(A, update_func)
end

update_coefficients!(L::MatrixOperator,u,p,t;kwargs...) = (L.update_func(L.A,u,p,t;kwargs...); nothing)

M = MatrixOperator(zeros(N,N); update_func=(A,u,p,t;val=ones(N,N)) -> copy!(A, val))