module Constants

struct FHNParams
    N::Int
    dx::Float64 # grid spacing
    Du::Float64
    Dv::Float64
    ϵ::Float64
    a::Float64
    b::Float64

    # Inner constructor that takes keyword arguments
    # The semicolon ';' separates positional arguments from keyword arguments
    FHNParams(; N::Int, dx::Float64, Du::Float64, Dv::Float64, ϵ::Float64, a::Float64, b::Float64) =
        new(N, dx, Du, Dv, ϵ, a, b)
end

export FHNParams

end # module Constants