diff options
Diffstat (limited to 'src/list/operation/higher/misc.h')
| -rw-r--r-- | src/list/operation/higher/misc.h | 32 |
1 files changed, 28 insertions, 4 deletions
diff --git a/src/list/operation/higher/misc.h b/src/list/operation/higher/misc.h index 280c0d5..95a5f50 100644 --- a/src/list/operation/higher/misc.h +++ b/src/list/operation/higher/misc.h @@ -3,6 +3,7 @@ #include "fold.h" #include "list/operation/concatenate.h" +#include "conditional/if.h" namespace tav { @@ -16,12 +17,35 @@ class Map { typename Current, typename Previous > - struct FunctionWrapper { + struct function_wrapper { typedef Cons<Function<Current>, Previous> type; }; public: - typedef typename Fold<FunctionWrapper, void, List>::type type; + typedef typename Fold<function_wrapper, void, List>::type type; + +}; + +template < + template<typename> class Function, + typename List +> +class Filter { + private: + template < + typename Current, + typename Previous + > + struct function_wrapper { + typedef If< + Function<Current>::type::value, + Cons<Current, Previous>, + Previous + > type; + }; + + public: + typedef typename Fold<function_wrapper, void, List>::type type; }; @@ -32,7 +56,7 @@ class Reverse { typename Current, typename Previous > - struct ReversedConcatenate { + struct reversed_concatenate { typedef typename Concatenate< Previous, Cons<Current, void> @@ -40,7 +64,7 @@ class Reverse { }; public: - typedef typename Fold<ReversedConcatenate, void, List>::type type; + typedef typename Fold<reversed_concatenate, void, List>::type type; }; |