I have a use-case where I have lists of predefined “special” points: usually, these points are ordinary vectors of floats, but occasionally, they depend on some external variables via some simple algebraic expression, e.g. [0.0, a*b/c, 0.5] (with external variables a, b and c). I’m wondering how best to represent such “sometimes-fixed-sometimes-variable” points in Julia?
Naively, I was thinking of something like
struct VariablePoint
cnst::Vector{Float64}
expr::Expr
is_cnst_or_expr::Bool
end
and then defining an overload on VariablePoint for input parameters that goes either to cnst or eval(expr) depending on is_cnst_or_expr. That feels wrong though because it needs eval.
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