how to use ColumnTuple with ColumnArrayT?

[howlotus]

With regular columns everything is ok (ColumnString, ColumnInt64, etc), with arrays of regular types everything is ok (ColumnArrayT, ColumnArrayT), with simple tuples it is also clear (ColumnTuple), but ColumnArrayT cannot be created.
Now I am trying to collect all references to tuples and create an array, but I get an array of a size that CH cannot process.

std::vector<ColumnRef> _refs = std::vector<ColumnRef>();
for (const auto& row: rows) {
    std::shared_ptr<ColumnInt64> item1 = std::make_shared<ColumnInt64>();
    std::shared_ptr<ColumnFloat32> item2 = std::make_shared<ColumnFloat32>();
    for (const auto& item: items) {
        item1 -> Append(item.item1);
        item2 -> Append(item.item2);
    }
    _refs.push_back(std::make_shared<ColumnTuple>(std::vector<ColumnRef>({item1, item2})));
}
std::shared_ptr<ColumnArrayT<ColumnTuple>> tuplesArray = std::make_shared<ColumnArrayT<ColumnTuple>>(_refs);

Got error: fail to send 11984 bytes of data: Operation now in progress

Please help me what is the correct approach for this? As I understand it, the library has no documentation for this.

[howlotus]

solved.

std::shared_ptr<ColumnArrayT<ColumnTuple>> tuplesArray = std::make_shared<ColumnArrayT<ColumnTuple>>(
    std::make_shared<ColumnTuple>(
        std::vector<ColumnRef>({
            std::make_shared<ColumnInt64>(),
            std::make_shared<ColumnFloat32>()
        })
    )
)

for (const auto& row: rows) {
    auto it = std::make_shared<ColumnTuple>(
        std::vector<ColumnRef>({
            std::make_shared<ColumnInt64>(),
            std::make_shared<ColumnFloat32>()
        })
    );

    for (const auto& item: items) {
        (*it)[0] -> As<ColumnInt64>() -> Append(item.item1);
        (*it)[1] -> As<ColumnFloat32>() -> Append(item.item2);
    }
    tuplesArray -> As<ColumnArrayT<ColumnTuple>>() -> AppendAsColumn(it);
}