From f9844b741feac35622b9566c6afae9bb686f5149 Mon Sep 17 00:00:00 2001 From: Adrian Kummerlaender Date: Sat, 24 Jan 2015 12:07:55 +0100 Subject: Added `MakeList` list generator * as its name implies this function returns a list of `Count` elements of value `Element` * added appropriate test case --- src/list/generator/make_list.h | 30 ++++++++++++++++++++++++++++++ test.cc | 31 +++++++++++++++++++++++++++++++ 2 files changed, 61 insertions(+) create mode 100644 src/list/generator/make_list.h diff --git a/src/list/generator/make_list.h b/src/list/generator/make_list.h new file mode 100644 index 0000000..3bf65a2 --- /dev/null +++ b/src/list/generator/make_list.h @@ -0,0 +1,30 @@ +#ifndef TYPEASVALUE_SRC_LIST_GENERATOR_MAKE_LIST_H_ +#define TYPEASVALUE_SRC_LIST_GENERATOR_MAKE_LIST_H_ + +#include "list/cons.h" +#include "operation/math.h" + +namespace tav { + +template < + typename Count, + typename Element +> +struct MakeList { + typedef Cons< + Element, + typename MakeList< + Substract>, + Element + >::type + > type; +}; + +template +struct MakeList, Element> { + typedef Cons type; +}; + +} + +#endif // TYPEASVALUE_SRC_LIST_GENERATOR_MAKE_LIST_H_ diff --git a/test.cc b/test.cc index 368cce5..1a20a74 100644 --- a/test.cc +++ b/test.cc @@ -11,6 +11,7 @@ #include "list/operation/higher/misc.h" #include "list/operation/higher/query.h" #include "list/generator/iota.h" +#include "list/generator/make_list.h" #include "list/generator/higher/list_tabulate.h" int main(int, char **) { } @@ -512,6 +513,18 @@ static_assert( // list iota +static_assert( + std::is_same< + tav::List>::type, + tav::Iota< + tav::Size<1>, + tav::Int<1>, + tav::Int<1> + >::type + >::value, + "(iota 1 1 1) != (list 1)" +); + static_assert( std::is_same< tav::List, tav::Int<2>, tav::Int<3>>::type, @@ -548,6 +561,24 @@ static_assert( "(iota 5 5 -1) != (list 5 4 3 2 1)" ); +// make list + +static_assert( + std::is_same< + tav::List>::type, + tav::MakeList, tav::Int<42>>::type + >::value, + "(make-list 1 42) != (list 42)" +); + +static_assert( + std::is_same< + tav::List, tav::Int<42>, tav::Int<42>>::type, + tav::MakeList, tav::Int<42>>::type + >::value, + "(make-list 3 42) != (list 42 42 42)" +); + // list tabulate static_assert( -- cgit v1.2.3