Function cast

cpp/src/arrow/compute/expression_test.cc:70–73

});

Expression cast(Expression argument, std::shared_ptr<DataType> to_type) {
  return call("cast", {std::move(argument)},
              compute::CastOptions::Safe(std::move(to_type)));
}

Expression true_unless_null(Expression argument) {
  return call("true_unless_null", {std::move(argument)});