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docs: get_kind() note added to "Systems of Quantities" chapter

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Mateusz Pusz
2024-02-13 20:25:28 +01:00
parent 202c1d10da
commit f1353a7166
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docs/users_guide/framework_basics/systems_of_quantities.md
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@@ -392,4 +392,9 @@ static_assert(same_type<kind_of<isq::length> / isq::time, isq::length / isq::tim
Only a root quantity from the hierarchy tree or the one marked with `is_kind` specifier Only a root quantity from the hierarchy tree or the one marked with `is_kind` specifier
in the `quantity_spec` definition can be put as a template parameter to the `kind_of` in the `quantity_spec` definition can be put as a template parameter to the `kind_of`
specifier. For example, `kind_of<isq::width>` will fail to compile. specifier. For example, `kind_of<isq::width>` will fail to compile. However, we can call
`get_kind(q)` to obtain a kind of any quantity:
```cpp
static_assert(get_kind(isq::width) == kind_of<isq::length>);
```