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[PR #7323] Add til::static_map, a constexpr key-value store #26894

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opened 2026-01-31 09:18:46 +00:00 by claunia · 0 comments
claunia commented 2026-01-31 09:18:46 +00:00
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Original Pull Request: https://github.com/microsoft/terminal/pull/7323

State: closed
Merged: Yes

This is based on (cribbed almost directly from) code written by the
inimitable @StephanTLavavej on one of our mailing lists.

This is a nice generic version of the approach used in
JsonUtils::EnumMapper and CodepointWidthDetector: a static array of
key-value pairs that we binary-search at runtime (or at compile time, as
the case may be.)

Keys are not required to be sorted, as we're taking advantage of
constexpr std::sort (VS 16.6+) to get the compiler to do it for us. How
cool is that?

static_map presents an operator[] or at much like
std::map/std::unordered_map does.

I've added some tests, but they're practically fully-solveable at compile
time so they pretty much act like VERIFY_IS_TRUE(true).

**Original Pull Request:** https://github.com/microsoft/terminal/pull/7323 **State:** closed **Merged:** Yes --- This is based on (cribbed almost directly from) code written by the inimitable @StephanTLavavej on one of our mailing lists. This is a nice generic version of the approach used in JsonUtils::EnumMapper and CodepointWidthDetector: a static array of key-value pairs that we binary-search at runtime (or at compile time, as the case may be.) Keys are not required to be sorted, as we're taking advantage of constexpr std::sort (VS 16.6+) to get the compiler to do it for us. How cool is that? static_map presents an operator[] or at much like std::map/std::unordered_map does. I've added some tests, but they're practically fully-solveable at compile time so they pretty much act like `VERIFY_IS_TRUE(true)`.
claunia added the pull-request label 2026-01-31 09:18:46 +00:00
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Reference: starred/terminal#26894
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