Function is_null

cpp/src/arrow/compute/expression.cc:1722–1724

}

Expression is_null(Expression lhs, bool nan_is_null) {
  return call("is_null", {std::move(lhs)}, compute::NullOptions(std::move(nan_is_null)));
}

Expression is_valid(Expression lhs) { return call("is_valid", {std::move(lhs)}); }