gatchamix
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| #include <variant> | |
| #include <type_traits> | |
| #include <iostream> | |
| #include <concepts> | |
| #include <print> | |
| // | |
| #define FWD(...) static_cast<decltype(__VA_ARGS__)&&>(__VA_ARGS__) |
gatchamix
/ defer member func.cpp
Last active
January 22, 2019 08:57
simplifies the creation of non-const member functions that defer to their const member function counterparts
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| #include <type_traits> | |
| // | |
| template <class T> | |
| struct remove_qualifiers | |
| : std::remove_cv<T> | |
| {}; | |
| template <class T> |
gatchamix
/ static_polymorphism_advanced.cpp
Created
October 12, 2018 10:56
additional compile-time replacements for polymorphism (more intrusive for end-user)
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| #include <type_traits> | |
| // | |
| template <class...> | |
| struct type_pack | |
| {}; | |
| // |
gatchamix
/ static_polymorphism.cpp
Created
October 12, 2018 10:32
simulating features of dynamic polymorphism and class inheritance at compile-time
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| #include <type_traits> | |
| // | |
| template <class...> | |
| struct type_pack | |
| {}; | |
| // |
gatchamix
/ has_member_function.cpp
Last active
October 12, 2018 09:06
faux-function to determine whether a class/struct has a function (optionally checking for a specific type signature)
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| #include <type_traits> | |
| // | |
| template <class...> | |
| struct type_pack | |
| {}; | |
| // |
gatchamix
/ is_constexpr.cpp
Created
September 18, 2018 10:13
solutions for determining if an expression meets the standard's definition of constant-expression
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| #include <utility> | |
| #include <string> | |
| #include <string_view> | |
| #include <type_traits> | |
| using namespace std::literals; | |
| #define version 17 | |
| // C++11 solution |
gatchamix
/ insertion_sort.cpp
Created
August 15, 2018 23:34
fast insertion sort for non-type template parameter packs in C++2a
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| static auto constexpr less = [](auto&& l, auto&& r) { return l < r; }; | |
| static auto constexpr less_equal = [](auto&& l, auto&& r) { return l <= r; }; | |
| static auto constexpr greater = [](auto&& l, auto&& r) { return l > r; }; | |
| static auto constexpr greater_equal = [](auto&& l, auto&& r) { return l <= r; }; | |
| // | |
| template <template <auto...> class C, auto... Vs, class Fn> | |
| auto constexpr sort(C<Vs...> in, Fn) | |
| { |
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| #include <cstddef> | |
| #include <type_traits> | |
| // | |
| template <auto V> | |
| struct constant | |
| { | |
| using value_type = decltype(V); |
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| #include <utility> | |
| #include <type_traits> | |
| // | |
| namespace detail | |
| { | |
| template <auto I, class T> | |
| struct indexer_elem | |
| {}; |
gatchamix
/ matrix17.cpp
Last active
July 25, 2018 21:14
simple matrix container using C++17 (original idea courtesy of jdmarsh)
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| #include <utility> | |
| #include <cstddef> | |
| #include <array> | |
| #include <type_traits> | |
| // | |
| template <class T, std::size_t Rows, std::size_t Cols = Rows> | |
| struct matrix | |
| { |
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