VCCC  2024.05
VisualCamp Common C++ library
range_size_t.hpp
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1 //
2 // Created by yonggyulee on 2024/01/06.
3 //
4 
5 #ifndef VCCC_RANGES_RANGE_SIZE_T_HPP
6 #define VCCC_RANGES_RANGE_SIZE_T_HPP
7 
8 #include <type_traits>
9 
10 #include "vccc/__ranges/size.hpp"
11 #include "vccc/__ranges/sized_range.hpp"
12 
13 namespace vccc {
14 namespace ranges {
15 namespace detail {
16 
17 template<typename R, bool = sized_range<R>::value /* true */>
18 struct range_size_impl {
19  using type = decltype(ranges::size(std::declval<R&>()));
20 };
21 
22 template<typename R>
23 struct range_size_impl<R, false> {};
24 
25 } // namespace detail
26 
27 template<typename R>
28 struct range_size : detail::range_size_impl<R> {};
29 
32 
38 template<typename R>
39 using range_size_t = typename range_size<R>::type;
40 
42 
43 } // namespace vccc
44 } // namespace ranges
45 
46 #endif // VCCC_RANGES_RANGE_SIZE_T_HPP
size.hpp
vccc::ranges::niebloid::size
constexpr VCCC_INLINE_OR_STATIC detail::size_niebloid size
returns the size of a container or array
Definition: size.hpp:145
vccc::ranges::range_size_t
typename range_size< R >::type range_size_t
Used to obtain the size type of the sized_range type R.
Definition: range_size_t.hpp:39
vccc
Definition: directory.h:12
vccc::value
constexpr VCCC_INLINE_OR_STATIC detail::element_niebloid< 1 > value
Definition: key_value.hpp:35
sized_range.hpp
vccc::ranges::range_size
Definition: range_size_t.hpp:28