Add missing files

.gitignore

@@ -27,3 +27,6 @@
 *.exe
 *.out
 *.app
+
+cmake-build-*
+.idea

include/generator/properties/constant.hpp

@@ -0,0 +1,74 @@
+//  Copyright (c) 2017 Marcin Copik
+//
+//  Distributed under the Boost Software License, Version 1.0. (See accompanying
+//  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef LINALG_PROPERTIES_ZEROS_HPP
+#define LINALG_PROPERTIES_ZEROS_HPP
+
+#include <type_traits>
+
+#include <generator/shape.hpp>
+#include <generator/property.hpp>
+#include <generator/properties/filler.hpp>
+
+namespace generator { namespace property {
+
+    // look for the first object
+    namespace detail {
+
+        template<typename T>
+        struct is_const_property : std::false_type {};
+        template<>
+        struct is_const_property<constant> : std::true_type {};
+        template<>
+        struct is_const_property<zeros> : std::true_type {};
+        template<>
+        struct is_const_property<ones> : std::true_type {};
+
+        template<typename Property, typename... Properties>
+        auto call(Property && x, Properties &&...)
+            -> typename std::enable_if< is_const_property<Property>::value, double>::type
+        {
+            return x.fill_value;
+        }
+
+        template<typename Property, typename... Properties>
+        auto call(Property &&, Properties &&... props)
+            -> typename std::enable_if< !is_const_property<Property>::value, double>::type
+        {
+            return call(std::forward<Properties>(props)...);
+        }
+
+        template<typename T>
+        struct constant_generator
+        {
+            template<typename Shape, typename RndGen, typename... Properties>
+            static void fill(Shape && shape, RndGen &&, Properties &&... props)
+            {
+                T val = static_cast<T>(call(std::forward<Properties>(props)...));
+                detail::fill(std::forward<Shape>(shape),
+                        [&]() { return val; }
+                    );
+            }
+        };
+    }
+
+    template<typename T, uint64_t type>
+    struct property;
+
+    template<typename T>
+    struct property<T, hash<constant>()> : detail::constant_generator<T>
+    {};
+
+    template<typename T>
+    struct property<T, hash<ones>()> : detail::constant_generator<T>
+    {};
+
+    template<typename T>
+    struct property<T, hash<zeros>()> : detail::constant_generator<T>
+    {};
+
+}}
+
+#endif //LINALG_TESTS_ZEROS_HPP