Fix type inference for disjunctions with nullness #524
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We extend the type inference to, correctly, consider the case with disjunctions (``or``) with nullness checks (``is None``). For example, ``(A is None) or (A == 3)`` means that the first value in the disjunction (``A is None``) implies that ``A`` is non-null in the second value (``A == 3``).
mristin
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We extend the type inference to, correctly, consider the case with disjunctions (
or) with nullness checks (is None).For example,
(A is None) or (A == 3)means that the first value in the disjunction (A is None) implies thatAis non-null in the second value (A == 3).