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I started by implementing
operate_to(res, -, a)
forAbstractArray
s but thenBase.broadcast!
would allocate inMA.operate_to!(coeffs(res), +, coeffs(res), coeffs(X))
when it would unalias the result from the first argument since they are the same.By merging the two in one line we have a call to
Base.broadcast!
with no alias so it seems better :)