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[PR #15089] Introduce til::linear_flat_set #30405

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opened 2026-01-31 09:40:38 +00:00 by claunia · 0 comments
claunia commented 2026-01-31 09:40:38 +00:00
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Original Pull Request: https://github.com/microsoft/terminal/pull/15089

State: closed
Merged: Yes

til::linear_flat_set is a primitive hash map with linear probing.
The implementation is slightly complicated due to the use of templates.
I've strongly considered just writing multiple copies of this class,
by hand since the code is indeed fairly trivial but ended up deciding
against it, because this templated approach makes testing easier.

This class is in the order of 10x faster than std::unordered_map.

**Original Pull Request:** https://github.com/microsoft/terminal/pull/15089 **State:** closed **Merged:** Yes --- `til::linear_flat_set` is a primitive hash map with linear probing. The implementation is slightly complicated due to the use of templates. I've strongly considered just writing multiple copies of this class, by hand since the code is indeed fairly trivial but ended up deciding against it, because this templated approach makes testing easier. This class is in the order of 10x faster than `std::unordered_map`.
claunia added the pull-request label 2026-01-31 09:40:38 +00:00
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Reference: starred/terminal#30405
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