Simplify promote_type_fallback #334
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Suggested by @AayushSabharwal. I am wondering whether that wouldn't be better compared to what we have.
The types for which that does not work are the types from JuMP, MOI and MultivariatePolynomials for which we already have custom methods (because the fallback would be allocating).
This also won't work for
Matrix * Vector
but the fallback withone
also don't work there.It also fixes the following but that @AayushSabharwal just reported to me:
It would also reduce the number of weird errors reported by users of JuMP saying
zero(::...)
is not defined.