diff --git a/sprout/adapt/sscrisk/cel/array.hpp b/sprout/adapt/sscrisk/cel/array.hpp
index 97b95fdd..2a7058f4 100644
--- a/sprout/adapt/sscrisk/cel/array.hpp
+++ b/sprout/adapt/sscrisk/cel/array.hpp
@@ -3,57 +3,8 @@
 
 #include <sscrisk/cel/array.hpp>
 #include <sprout/config.hpp>
-#if SPROUT_USE_INDEX_ITERATOR_IMPLEMENTATION
-#	include <cstddef>
-#	include <type_traits>
-#	include <sprout/container/traits.hpp>
-#	include <sprout/iterator/index_iterator.hpp>
-#endif
-
-#if SPROUT_USE_INDEX_ITERATOR_IMPLEMENTATION
-namespace sprout {
-	//
-	// container_traits
-	//
-	template<typename T, std::size_t N>
-	struct container_traits<sscrisk::cel::array<T, N> >
-		: public sprout::detail::container_traits_default<sscrisk::cel::array<T, N> >
-	{
-	public:
-		typedef sprout::index_iterator<sscrisk::cel::array<T, N>&> iterator;
-		typedef sprout::index_iterator<sscrisk::cel::array<T, N> const&> const_iterator;
-	};
-}	// namespace sprout
-
-namespace sprout {
-	//
-	// range_begin
-	//
-	template<typename T, std::size_t N>
-	inline typename sprout::container_traits<sscrisk::cel::array<T, N> >::iterator
-	range_begin(sscrisk::cel::array<T, N>& cont) {
-		return typename sprout::container_traits<sscrisk::cel::array<T, N> >::iterator(cont, 0);
-	}
-	template<typename T, std::size_t N>
-	inline SPROUT_CONSTEXPR typename sprout::container_traits<sscrisk::cel::array<T, N> >::const_iterator
-	range_begin(sscrisk::cel::array<T, N> const& cont) {
-		return typename sprout::container_traits<sscrisk::cel::array<T, N> >::const_iterator(cont, 0);
-	}
-
-	//
-	// range_end
-	//
-	template<typename T, std::size_t N>
-	inline typename sprout::container_traits<sscrisk::cel::array<T, N> >::iterator
-	range_end(sscrisk::cel::array<T, N>& cont) {
-		return typename sprout::container_traits<sscrisk::cel::array<T, N> >::iterator(cont, cont.size());
-	}
-	template<typename T, std::size_t N>
-	inline SPROUT_CONSTEXPR typename sprout::container_traits<sscrisk::cel::array<T, N> >::const_iterator
-	range_end(sscrisk::cel::array<T, N> const& cont) {
-		return typename sprout::container_traits<sscrisk::cel::array<T, N> >::const_iterator(cont, cont.size());
-	}
-}	// namespace sprout
-#endif
+#include <sprout/container/sscrisk/cel/array.hpp>
+#include <sprout/functional/hash/sscrisk/cel/array.hpp>
+#include <sprout/tuple/sscrisk/cel/array.hpp>
 
 #endif	// #ifndef SPROUT_ADAPT_SSCRISK_CEL_ARRAY_HPP
diff --git a/sprout/adapt/sscrisk/cel/utility.hpp b/sprout/adapt/sscrisk/cel/utility.hpp
new file mode 100644
index 00000000..946c3dd0
--- /dev/null
+++ b/sprout/adapt/sscrisk/cel/utility.hpp
@@ -0,0 +1,9 @@
+#ifndef SPROUT_ADAPT_SSCRISK_CEL_UTILITY_HPP
+#define SPROUT_ADAPT_SSCRISK_CEL_UTILITY_HPP
+
+#include <sscrisk/cel/utility.hpp>
+#include <sprout/config.hpp>
+#include <sprout/functional/hash/sscrisk/cel/utility.hpp>
+#include <sprout/tuple/sscrisk/cel/utility.hpp>
+
+#endif	// #ifndef SPROUT_ADAPT_SSCRISK_CEL_UTILITY_HPP
diff --git a/sprout/algorithm/fixed/copy.hpp b/sprout/algorithm/fixed/copy.hpp
index e325a9c7..eb94722f 100644
--- a/sprout/algorithm/fixed/copy.hpp
+++ b/sprout/algorithm/fixed/copy.hpp
@@ -49,6 +49,7 @@ namespace sprout {
 					sprout::distance(first, last)
 					);
 			}
+
 			template<typename InputIterator, typename Result, typename... Args>
 			inline SPROUT_CONSTEXPR typename std::enable_if<
 				sprout::container_traits<Result>::static_size == sizeof...(Args),
@@ -87,6 +88,30 @@ namespace sprout {
 			{
 				return sprout::fixed::detail::copy_impl(first, last, result, sprout::size(result));
 			}
+
+			template<typename InputIterator, typename Result>
+			inline SPROUT_CONSTEXPR typename std::enable_if<
+				sprout::is_fixed_container<Result>::value,
+				typename sprout::fixed::result_of::algorithm<Result>::type
+			>::type
+			copy(InputIterator first, InputIterator last, Result const& result)
+			{
+				typedef typename std::iterator_traits<InputIterator>::iterator_category* category;
+				return sprout::fixed::detail::copy(first, last, result, category());
+			}
+			template<typename InputIterator, typename Result>
+			inline SPROUT_CONSTEXPR typename std::enable_if<
+				!sprout::is_fixed_container<Result>::value,
+				typename sprout::fixed::result_of::algorithm<Result>::type
+			>::type
+			copy(InputIterator first, InputIterator last, Result const& result)
+			{
+				return sprout::remake<Result>(
+					result,
+					sprout::size(result),
+					first, last
+					);
+			}
 		}	// namespace detail
 		//
 		// copy
@@ -94,8 +119,7 @@ namespace sprout {
 		template<typename InputIterator, typename Result>
 		inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::algorithm<Result>::type
 		copy(InputIterator first, InputIterator last, Result const& result) {
-			typedef typename std::iterator_traits<InputIterator>::iterator_category* category;
-			return sprout::fixed::detail::copy(first, last, result, category());
+			return sprout::fixed::detail::copy(first, last, result);
 		}
 	}	// namespace fixed
 
diff --git a/sprout/container/container_construct_traits.hpp b/sprout/container/container_construct_traits.hpp
index 6e5b3a33..350f66dc 100644
--- a/sprout/container/container_construct_traits.hpp
+++ b/sprout/container/container_construct_traits.hpp
@@ -1,6 +1,7 @@
 #ifndef SPROUT_CONTAINER_CONTAINER_TRAITS_CONSTRUCT_TRAITS_HPP
 #define SPROUT_CONTAINER_CONTAINER_TRAITS_CONSTRUCT_TRAITS_HPP
 
+#include <type_traits>
 #include <sprout/config.hpp>
 #include <sprout/container/container_traits.hpp>
 #include <sprout/utility/forward.hpp>
@@ -14,34 +15,51 @@ namespace sprout {
 
 	namespace detail {
 		template<typename Container, typename... Args>
-		inline SPROUT_CONSTEXPR typename sprout::container_construct_traits<Container>::copied_type
+		inline SPROUT_CONSTEXPR typename std::enable_if<
+			sprout::is_fixed_container<Container>::value,
+			typename sprout::container_construct_traits<Container>::copied_type
+		>::type
 		default_make_container(Args&&... args) {
 			typedef typename sprout::container_construct_traits<Container>::copied_type copied_type;
 			return copied_type{{sprout::forward<Args>(args)...}};
 		}
+		template<typename Container, typename... Args>
+		inline SPROUT_CONSTEXPR typename std::enable_if<
+			!sprout::is_fixed_container<Container>::value,
+			typename sprout::container_construct_traits<Container>::copied_type
+		>::type
+		default_make_container(Args&&... args) {
+			typedef typename sprout::container_construct_traits<Container>::copied_type copied_type;
+			return copied_type{sprout::forward<Args>(args)...};
+		}
+
+		template<typename Container>
+		struct container_construct_traits_impl {
+		public:
+			typedef Container copied_type;
+		public:
+			template<typename Cont>
+			static SPROUT_CONSTEXPR copied_type
+			deep_copy(Cont&& cont) {
+				return sprout::forward<Cont>(cont);
+			}
+			template<typename... Args>
+			static SPROUT_CONSTEXPR copied_type
+			make(Args&&... args) {
+				return sprout::detail::default_make_container<Container>(sprout::forward<Args>(args)...);
+			}
+			template<typename Cont, typename... Args>
+			static SPROUT_CONSTEXPR copied_type
+			remake(Cont&& cont, typename sprout::container_traits<Container>::difference_type size, Args&&... args) {
+				return make(sprout::forward<Args>(args)...);
+			}
+		};
 	}	// namespace detail
 
 	template<typename Container>
-	struct container_construct_traits {
-	public:
-		typedef Container copied_type;
-	public:
-		template<typename Cont>
-		static SPROUT_CONSTEXPR copied_type
-		deep_copy(Cont&& cont) {
-			return sprout::forward<Cont>(cont);
-		}
-		template<typename... Args>
-		static SPROUT_CONSTEXPR copied_type
-		make(Args&&... args) {
-			return sprout::detail::default_make_container<Container>(sprout::forward<Args>(args)...);
-		}
-		template<typename Cont, typename... Args>
-		static SPROUT_CONSTEXPR copied_type
-		remake(Cont&& cont, typename sprout::container_traits<Container>::difference_type size, Args&&... args) {
-			return make(sprout::forward<Args>(args)...);
-		}
-	};
+	struct container_construct_traits
+		: public sprout::detail::container_construct_traits_impl<Container>
+	{};
 	template<typename Container>
 	struct container_construct_traits<Container const>
 		: public sprout::container_construct_traits<Container>
diff --git a/sprout/container/container_traits.hpp b/sprout/container/container_traits.hpp
index 3afb36f1..d3854d24 100644
--- a/sprout/container/container_traits.hpp
+++ b/sprout/container/container_traits.hpp
@@ -513,6 +513,42 @@ namespace sprout {
 		, public sprout::detail::inherit_if_static_size<sprout::container_traits<Container> >
 		, public sprout::detail::container_nosy_fixed_size<sprout::container_traits<Container> >
 	{};
+
+	//
+	// is_fixed_container
+	//
+	template<typename Container>
+	struct is_fixed_container
+		: public sprout::detail::has_static_size<sprout::container_traits<Container> >
+	{};
+
+	namespace detail {
+		//
+		// static_size_or_zero
+		//
+		template<typename Container, typename = void>
+		struct static_size_or_zero;
+		template<typename Container>
+		struct static_size_or_zero<
+			Container,
+			typename std::enable_if<sprout::is_fixed_container<sprout::container_traits<Container> >::value>::type
+		>
+			: public std::integral_constant<
+				typename sprout::container_traits<Container>::size_type,
+				sprout::container_traits<Container>::static_size
+			>
+		{};
+		template<typename Container>
+		struct static_size_or_zero<
+			Container,
+			typename std::enable_if<!sprout::is_fixed_container<sprout::container_traits<Container> >::value>::type
+		>
+			: public std::integral_constant<
+				typename sprout::container_traits<Container>::size_type,
+				0
+			>
+		{};
+	}	// namespace sprout
 }	// namespace sprout
 
 #endif	// #ifndef SPROUT_CONTAINER_CONTAINER_TRAITS_HPP
diff --git a/sprout/container/sscrisk/cel/array.hpp b/sprout/container/sscrisk/cel/array.hpp
new file mode 100644
index 00000000..0d0e297b
--- /dev/null
+++ b/sprout/container/sscrisk/cel/array.hpp
@@ -0,0 +1,59 @@
+#ifndef SPROUT_CONTAINER_SSCRISK_CEL_ARRAY_HPP
+#define SPROUT_CONTAINER_SSCRISK_CEL_ARRAY_HPP
+
+#include <sscrisk/cel/array.hpp>
+#include <sprout/config.hpp>
+#if SPROUT_USE_INDEX_ITERATOR_IMPLEMENTATION
+#	include <cstddef>
+#	include <type_traits>
+#	include <sprout/container/traits.hpp>
+#	include <sprout/iterator/index_iterator.hpp>
+#endif
+
+#if SPROUT_USE_INDEX_ITERATOR_IMPLEMENTATION
+namespace sprout {
+	//
+	// container_traits
+	//
+	template<typename T, std::size_t N>
+	struct container_traits<sscrisk::cel::array<T, N> >
+		: public sprout::detail::container_traits_default<sscrisk::cel::array<T, N> >
+	{
+	public:
+		typedef sprout::index_iterator<sscrisk::cel::array<T, N>&> iterator;
+		typedef sprout::index_iterator<sscrisk::cel::array<T, N> const&> const_iterator;
+	};
+}	// namespace sprout
+
+namespace sprout {
+	//
+	// range_begin
+	//
+	template<typename T, std::size_t N>
+	inline typename sprout::container_traits<sscrisk::cel::array<T, N> >::iterator
+	range_begin(sscrisk::cel::array<T, N>& cont) {
+		return typename sprout::container_traits<sscrisk::cel::array<T, N> >::iterator(cont, 0);
+	}
+	template<typename T, std::size_t N>
+	inline SPROUT_CONSTEXPR typename sprout::container_traits<sscrisk::cel::array<T, N> >::const_iterator
+	range_begin(sscrisk::cel::array<T, N> const& cont) {
+		return typename sprout::container_traits<sscrisk::cel::array<T, N> >::const_iterator(cont, 0);
+	}
+
+	//
+	// range_end
+	//
+	template<typename T, std::size_t N>
+	inline typename sprout::container_traits<sscrisk::cel::array<T, N> >::iterator
+	range_end(sscrisk::cel::array<T, N>& cont) {
+		return typename sprout::container_traits<sscrisk::cel::array<T, N> >::iterator(cont, cont.size());
+	}
+	template<typename T, std::size_t N>
+	inline SPROUT_CONSTEXPR typename sprout::container_traits<sscrisk::cel::array<T, N> >::const_iterator
+	range_end(sscrisk::cel::array<T, N> const& cont) {
+		return typename sprout::container_traits<sscrisk::cel::array<T, N> >::const_iterator(cont, cont.size());
+	}
+}	// namespace sprout
+#endif
+
+#endif	// #ifndef SPROUT_CONTAINER_SSCRISK_CEL_ARRAY_HPP
diff --git a/sprout/pit/pit.hpp b/sprout/pit/pit.hpp
index b7cdef0f..f3ade3a3 100644
--- a/sprout/pit/pit.hpp
+++ b/sprout/pit/pit.hpp
@@ -16,22 +16,24 @@ namespace sprout {
 	// pit
 	//
 	template<typename Container>
-	class pit {
+	class pit
+		: public sprout::container_traits_facade<Container>
+	{
 	public:
 		typedef Container container_type;
-		typedef typename sprout::container_traits<container_type>::value_type value_type;
-		typedef typename sprout::container_traits<container_type>::reference reference;
-		typedef typename sprout::container_traits<container_type>::const_reference const_reference;
+		typedef typename sprout::container_traits_facade<Container>::value_type value_type;
+		typedef typename sprout::container_traits_facade<Container>::reference reference;
+		typedef typename sprout::container_traits_facade<Container>::const_reference const_reference;
 		typedef typename sprout::value_iterator<reference> iterator;
 		typedef typename sprout::value_iterator<const_reference> const_iterator;
-		typedef typename sprout::container_traits<container_type>::size_type size_type;
-		typedef typename sprout::container_traits<container_type>::difference_type difference_type;
-		typedef typename sprout::container_traits<container_type>::pointer pointer;
-		typedef typename sprout::container_traits<container_type>::const_pointer const_pointer;
+		typedef typename sprout::container_traits_facade<Container>::size_type size_type;
+		typedef typename sprout::container_traits_facade<Container>::difference_type difference_type;
+		typedef typename sprout::container_traits_facade<Container>::pointer pointer;
+		typedef typename sprout::container_traits_facade<Container>::const_pointer const_pointer;
 		typedef typename sprout::reverse_iterator<iterator> reverse_iterator;
 		typedef typename sprout::reverse_iterator<const_iterator> const_reverse_iterator;
 	public:
-		SPROUT_STATIC_CONSTEXPR size_type static_size = sprout::container_traits<container_type>::static_size;
+		SPROUT_STATIC_CONSTEXPR size_type enumerable_size = sprout::detail::static_size_or_zero<sprout::container_traits_facade<Container> >::value;
 	public:
 		value_type elem;
 	public:
@@ -43,10 +45,10 @@ namespace sprout {
 		}
 		// iterators:
 		iterator begin() {
-			return iterator(elem, static_size);
+			return iterator(elem, enumerable_size);
 		}
 		SPROUT_CONSTEXPR const_iterator begin() const {
-			return const_iterator(elem, static_size);
+			return const_iterator(elem, enumerable_size);
 		}
 		iterator end() SPROUT_NOEXCEPT {
 			return iterator(elem, 0);
@@ -67,7 +69,7 @@ namespace sprout {
 			return const_reverse_iterator(begin());
 		}
 		SPROUT_CONSTEXPR const_iterator cbegin() const SPROUT_NOEXCEPT {
-			return const_iterator(elem, static_size);
+			return const_iterator(elem, enumerable_size);
 		}
 		SPROUT_CONSTEXPR const_iterator cend() const SPROUT_NOEXCEPT {
 			return const_iterator(elem, 0);
@@ -80,13 +82,13 @@ namespace sprout {
 		}
 		// capacity:
 		SPROUT_CONSTEXPR size_type size() const SPROUT_NOEXCEPT {
-			return static_size;
+			return enumerable_size;
 		}
 		SPROUT_CONSTEXPR size_type max_size() const SPROUT_NOEXCEPT {
 			return size();
 		}
 		SPROUT_CONSTEXPR bool empty() const SPROUT_NOEXCEPT {
-			return static_size == 0;
+			return enumerable_size == 0;
 		}
 		// element access:
 		reference operator[](size_type i) {
@@ -127,7 +129,7 @@ namespace sprout {
 		}
 	};
 	template<typename Container>
-	SPROUT_CONSTEXPR_OR_CONST typename sprout::pit<Container>::size_type sprout::pit<Container>::static_size;
+	SPROUT_CONSTEXPR_OR_CONST typename sprout::pit<Container>::size_type sprout::pit<Container>::enumerable_size;
 
 	//
 	// swap