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docs: C++23 examples placed first so they open by default in the docs
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@ -95,14 +95,6 @@ including:
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`QuantitySpec` can be defined by the user in one of the following ways:
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=== "C++20"
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```cpp
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inline constexpr struct length : quantity_spec<length, dim_length> {} length;
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inline constexpr struct height : quantity_spec<height, length> {} height;
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inline constexpr struct speed : quantity_spec<speed, length / time> {} speed;
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```
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=== "C++23"
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```cpp
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@ -111,6 +103,14 @@ including:
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inline constexpr struct speed : quantity_spec<length / time> {} speed;
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```
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=== "C++20"
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```cpp
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inline constexpr struct length : quantity_spec<length, dim_length> {} length;
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inline constexpr struct height : quantity_spec<height, length> {} height;
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inline constexpr struct speed : quantity_spec<speed, length / time> {} speed;
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```
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=== "Portable"
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```cpp
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@ -94,13 +94,6 @@ Also, it explicitly states that:
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To specify that a specific quantity has a vector or tensor character a value of `quantity_character`
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enumeration can be appended to the `quantity_spec` describing such a quantity type:
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=== "C++20"
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```cpp
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inline constexpr struct position_vector : quantity_spec<position_vector, length, quantity_character::vector> {} position_vector;
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inline constexpr struct displacement : quantity_spec<displacement, length, quantity_character::vector> {} displacement;
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```
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=== "C++23"
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```cpp
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@ -108,6 +101,13 @@ enumeration can be appended to the `quantity_spec` describing such a quantity ty
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inline constexpr struct displacement : quantity_spec<length, quantity_character::vector> {} displacement;
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```
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=== "C++20"
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```cpp
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inline constexpr struct position_vector : quantity_spec<position_vector, length, quantity_character::vector> {} position_vector;
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inline constexpr struct displacement : quantity_spec<displacement, length, quantity_character::vector> {} displacement;
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```
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=== "Portable"
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```cpp
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@ -123,18 +123,18 @@ character determined according to the kind of operations included in the
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For example, `velocity` in the below definition will be defined as a vector quantity (no explicit
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character override is needed):
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=== "C++20"
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```cpp
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inline constexpr struct velocity : quantity_spec<velocity, speed, position_vector / duration> {} velocity;
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```
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=== "C++23"
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```cpp
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inline constexpr struct velocity : quantity_spec<speed, position_vector / duration> {} velocity;
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```
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=== "C++20"
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```cpp
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inline constexpr struct velocity : quantity_spec<velocity, speed, position_vector / duration> {} velocity;
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```
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=== "Portable"
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```cpp
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@ -212,14 +212,6 @@ flowchart TD
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To provide such support in the library, we provided an `is_kind` specifier that can be appended
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to the quantity specification:
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=== "C++20"
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```cpp
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inline constexpr struct angular_measure : quantity_spec<angular_measure, dimensionless, arc_length / radius, is_kind> {} angular_measure;
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inline constexpr struct solid_angular_measure : quantity_spec<solid_angular_measure, dimensionless, area / pow<2>(radius), is_kind> {} solid_angular_measure;
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inline constexpr struct storage_capacity : quantity_spec<storage_capacity, dimensionless, is_kind> {} storage_capacity;
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```
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=== "C++23"
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```cpp
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@ -228,6 +220,14 @@ to the quantity specification:
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inline constexpr struct storage_capacity : quantity_spec<dimensionless, is_kind> {} storage_capacity;
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```
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=== "C++20"
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```cpp
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inline constexpr struct angular_measure : quantity_spec<angular_measure, dimensionless, arc_length / radius, is_kind> {} angular_measure;
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inline constexpr struct solid_angular_measure : quantity_spec<solid_angular_measure, dimensionless, area / pow<2>(radius), is_kind> {} solid_angular_measure;
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inline constexpr struct storage_capacity : quantity_spec<storage_capacity, dimensionless, is_kind> {} storage_capacity;
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```
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=== "Portable"
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```cpp
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@ -121,28 +121,6 @@ from such an instantiation.
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For example, here is how the above quantity kind tree can be modeled in the library:
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=== "C++20"
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```cpp
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inline constexpr struct length : quantity_spec<length, dim_length> {} length;
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inline constexpr struct width : quantity_spec<width, length> {} width;
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inline constexpr auto breadth = width;
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inline constexpr struct height : quantity_spec<height, length> {} height;
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inline constexpr auto depth = height;
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inline constexpr auto altitude = height;
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inline constexpr struct thickness : quantity_spec<thickness, width> {} thickness;
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inline constexpr struct diameter : quantity_spec<diameter, width> {} diameter;
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inline constexpr struct radius : quantity_spec<radius, width> {} radius;
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inline constexpr struct radius_of_curvature : quantity_spec<radius_of_curvature, radius> {} radius_of_curvature;
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inline constexpr struct path_length : quantity_spec<path_length, length> {} path_length;
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inline constexpr auto arc_length = path_length;
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inline constexpr struct distance : quantity_spec<distance, path_length> {} distance;
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inline constexpr struct radial_distance : quantity_spec<radial_distance, distance> {} radial_distance;
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inline constexpr struct wavelength : quantity_spec<wavelength, length> {} wavelength;
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inline constexpr struct position_vector : quantity_spec<position_vector, length, quantity_character::vector> {} position_vector;
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inline constexpr struct displacement : quantity_spec<displacement, length, quantity_character::vector> {} displacement;
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```
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=== "C++23"
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```cpp
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@ -165,6 +143,28 @@ For example, here is how the above quantity kind tree can be modeled in the libr
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inline constexpr struct displacement : quantity_spec<length, quantity_character::vector> {} displacement;
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```
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=== "C++20"
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```cpp
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inline constexpr struct length : quantity_spec<length, dim_length> {} length;
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inline constexpr struct width : quantity_spec<width, length> {} width;
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inline constexpr auto breadth = width;
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inline constexpr struct height : quantity_spec<height, length> {} height;
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inline constexpr auto depth = height;
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inline constexpr auto altitude = height;
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inline constexpr struct thickness : quantity_spec<thickness, width> {} thickness;
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inline constexpr struct diameter : quantity_spec<diameter, width> {} diameter;
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inline constexpr struct radius : quantity_spec<radius, width> {} radius;
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inline constexpr struct radius_of_curvature : quantity_spec<radius_of_curvature, radius> {} radius_of_curvature;
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inline constexpr struct path_length : quantity_spec<path_length, length> {} path_length;
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inline constexpr auto arc_length = path_length;
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inline constexpr struct distance : quantity_spec<distance, path_length> {} distance;
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inline constexpr struct radial_distance : quantity_spec<radial_distance, distance> {} radial_distance;
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inline constexpr struct wavelength : quantity_spec<wavelength, length> {} wavelength;
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inline constexpr struct position_vector : quantity_spec<position_vector, length, quantity_character::vector> {} position_vector;
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inline constexpr struct displacement : quantity_spec<displacement, length, quantity_character::vector> {} displacement;
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```
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=== "Portable"
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```cpp
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