diff options
Diffstat (limited to 'src/list/operation/length.h')
-rw-r--r-- | src/list/operation/length.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/list/operation/length.h b/src/list/operation/length.h new file mode 100644 index 0000000..1f609d4 --- /dev/null +++ b/src/list/operation/length.h @@ -0,0 +1,21 @@ +#ifndef TYPEASVALUE_SRC_LIST_OPERATION_LENGTH_H_ +#define TYPEASVALUE_SRC_LIST_OPERATION_LENGTH_H_ + +#include "higher/fold.h" +#include "operation/math.h" + +namespace tav { + +namespace detail { + +template <typename, typename Accumulated> +using length_accumulate = Add<Size<1>, Accumulated>; + +} + +template <typename List> +using Length = Fold<detail::length_accumulate, Size<0>, List>; + +} + +#endif // TYPEASVALUE_SRC_LIST_OPERATION_LENGTH_H_ |