Is there an efficient way to associate a value with a parameterized type.For exa

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Is there an efficient way to associate a value with a parameterized type.
For example:
struct GaloisField{p,r}; val::Int end

+(a::G, b::G} where G<:GaloisField = addop(a.val, b.val, logtable(G))

Memoization of logtable or using a global dictionary is not fast enough.

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The following post of @benoitrichard gave the solution:
I think what you need is a generated function then

@generated function logtable(::Type{G}) where {p, r, G <: GaloisField{p, r}}
lg = _logtable(p, r) # The actual computation
return :($lg)
end

That way the actual logtable will be comptued only once per type

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