Add common_unit and make_common utilities
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We also add the "common point" versions of these. The absence of `common_unit` and `common_point_unit` was mostly just an oversight. I recently tried to call one in Godbolt, and got surprised when I couldn't. And it turned out that I had already written this function anyway, except that it was hidden away inside of a test file. As I thought about these functions more, I thought it was interesting that the inputs are unit slots, so we could have a wide variety of things (simple units, quantity makers, unit symbols, etc.), but the output would always be a simple unit. Wouldn't it be nice if we could also combine `meters` and `feet`, or `m` and `ft`, and have the output act like its inputs? This idea became the `make_common` and `make_common_point` utilities. Docs included (and rendered and tested).
chiphogg
added
release notes: ✨ lib (enhancement)
geoffviola
approved these changes
Dec 18, 2024
| } | ||
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| TEST(MakeCommon, PreservesCategory) { | ||
| constexpr auto feeters = make_common(feet, meters); |
hoffbrinkle
reviewed
Dec 18, 2024
Co-authored-by: Michael Hordijk <[email protected]>
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We also add the "common point" versions of these.
The absence of
common_unitandcommon_point_unitwas mostly just anoversight. I recently tried to call one in Godbolt, and got surprised
when I couldn't. And it turned out that I had already written this
function anyway, except that it was hidden away inside of a test file.
As I thought about these functions more, I thought it was interesting
that the inputs are unit slots, so we could have a wide variety of
things (simple units, quantity makers, unit symbols, etc.), but the
output would always be a simple unit. Wouldn't it be nice if we could
also combine
metersandfeet, ormandft, and have the outputact like its inputs? This idea became the
make_commonandmake_common_pointutilities.Docs included (and rendered and tested).