diff options
Diffstat (limited to 'src/list')
| -rw-r--r-- | src/list/operation/higher/take_while.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/src/list/operation/higher/take_while.h b/src/list/operation/higher/take_while.h new file mode 100644 index 0000000..01062f4 --- /dev/null +++ b/src/list/operation/higher/take_while.h @@ -0,0 +1,33 @@ +#ifndef TYPEASVALUE_SRC_LIST_OPERATION_HIGHER_TAKE_WHILE_H_ +#define TYPEASVALUE_SRC_LIST_OPERATION_HIGHER_TAKE_WHILE_H_ + +#include "type.h" +#include "conditional/if.h" + +namespace tav { + +template < + template<typename> class Predicate, + typename Current +> +struct TakeWhile { + typedef If< + Predicate<Head<Current>>::type::value, + Cons< + Head<Current>, + typename TakeWhile<Predicate, Tail<Current>>::type + >, + void + > type; +}; + +template < + template<typename> class Predicate +> +struct TakeWhile<Predicate, void> { + typedef void type; +}; + +} + +#endif // TYPEASVALUE_SRC_LIST_OPERATION_HIGHER_TAKE_WHILE_H_ |