feedc0de/mp-units
1
0
Fork 0
forked from mpusz/mp-units
Code Pull Requests Activity

Minor changes to README

Browse Source
This commit is contained in:
Mateusz Pusz
2019-04-05 17:49:59 +02:00
parent e0aa10e133
commit 09457e9b8f
1 changed files with 4 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
README.md
View File

@@ -31,7 +31,7 @@ static_assert(2_km / 2_kmph == 1_h);
3. No macros in the user interface 3. No macros in the user interface
4. Easy extensibility 4. Easy extensibility
5. No external dependencies 5. No external dependencies
6. Possibility to be standardized as a part of C++ Standard Library 6. Possibility to be standardized as a part of the C++ Standard Library
## Basic Concepts ## Basic Concepts
@@ -70,14 +70,14 @@ struct exp {
}; };
``` ```
where `BaseDimension` for now is: where `BaseDimension` is a unique sortable compile-time value and for now is implemented as:
```cpp ```cpp
template<int UniqueValue> template<int UniqueValue>
using dim_id = std::integral_constant<int, UniqueValue>; using dim_id = std::integral_constant<int, UniqueValue>;
``` ```
but it is meant to be replaced with C++20 class constexpr values provided as non-type template but it is meant to be replaced with C++20 class `constexpr` values provided as non-type template
parameters (when feature will be available in a compiler) so that for example base dimension for parameters (when feature will be available in a compiler) so that for example base dimension for
length will be expressed as `dimension<exp<"length", 1>>`. length will be expressed as `dimension<exp<"length", 1>>`.
@@ -94,7 +94,7 @@ concept Exponent =
Above design of dimensions is created with the ease of use for end users in mind. Compile-time Above design of dimensions is created with the ease of use for end users in mind. Compile-time
errors should provide as short as possible template instantiations strings that should be easy to errors should provide as short as possible template instantiations strings that should be easy to
understand by every C++ programmer. Also types visible in a debugger should be easy to understand. understand by every engineer. Also types visible in a debugger should be easy to understand.
That is why `units::dimension` type for derived dimensions always stores information about only That is why `units::dimension` type for derived dimensions always stores information about only
those base dimensions that are used to form that derived dimension. those base dimensions that are used to form that derived dimension.