query k-mer coordinates #337
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hmusta
requested changes
Jul 15, 2021
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| // TODO: reshape? | ||
| for (size_t i = 0; i < rows.size(); ++i) { | ||
| row_tuples[i].reserve(column_ranks[i].size()); | ||
| for (auto [j, r] : column_ranks[i]) { | ||
| assert(r >= 1 && "matches can't have zero-rank"); | ||
| size_t begin = delimiters_[j].select1(r) + 1 - r; | ||
| size_t end = delimiters_[j].select1(r + 1) - r; | ||
| Tuple tuple; | ||
| tuple.reserve(end - begin); | ||
| for (size_t t = begin; t < end; ++t) { | ||
| tuple.push_back(column_values_[j][t]); | ||
| } | ||
| row_tuples[i].emplace_back(j, std::move(tuple)); | ||
| } |
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I agree, I think it might be more cache efficient to first aggregate a list of all accessed column IDs, then iterate through each column once to populate this vector.
hmusta
reviewed
Jul 15, 2021
hmusta
requested changes
Jul 15, 2021
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