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Code/CryEngine/CryCommon/Algorithm.h

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+/*
+* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
+* its licensors.
+*
+* For complete copyright and license terms please see the LICENSE at the root of this
+* distribution (the "License"). All use of this software is governed by the License,
+* or, if provided, by the license below or the license accompanying this file. Do not
+* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+*
+*/
+#ifndef CRYINCLUDE_CRYCOMMON_ALGORITHM_H
+#define CRYINCLUDE_CRYCOMMON_ALGORITHM_H
+#pragma once
+//short hand for using stl algorithms. same syntax (from users perspective) of c++17 range library. Only the shorthand algorithms from range library(N4128) though.
+//Not all algorithms are covered. Add any as you need them. It would be a fair amount of work to add them all, so I'm just adding them as needed.
+//Note Android doesn't have non member cbegin and cend yet.
+
+#include <algorithm>
+#include <numeric>
+#include <iterator>
+
+namespace std17
+{
+    template<typename Container, typename Callable>
+    void for_each(const Container& con, Callable callable)
+    {
+        std::for_each(begin(con), end(con), callable);
+    }
+
+    template<typename Container, typename UnaryPredicate>
+    bool any_of(const Container& con, UnaryPredicate pred)
+    {
+        return std::any_of(begin(con), end(con), pred);
+    }
+
+    template<typename Container, typename UnaryPredicate>
+    bool all_of(const Container& con, UnaryPredicate pred)
+    {
+        return std::all_of(begin(con), end(con), pred);
+    }
+
+    template<typename Container, typename UnaryPredicate>
+    bool none_of(const Container& con, UnaryPredicate pred)
+    {
+        return std::none_of(begin(con), end(con), pred);
+    }
+
+    template<typename Container, typename UnaryPredicate>
+    typename Container::iterator find_if(Container& con, UnaryPredicate pred)
+    {
+        return std::find_if(begin(con), end(con), pred);
+    }
+
+    template <typename Container, typename T>
+    T accumulate(const Container& con, T init)
+    {
+        return std::accumulate(begin(con), end(con), init);
+    }
+
+    template <typename Container, typename T, class BinaryOperation>
+    T accumulate(const Container& con, T init, BinaryOperation binary_op)
+    {
+        return std::accumulate(begin(con), end(con), init, binary_op);
+    }
+
+    template <typename Container, typename UnaryPredicate>
+    auto count_if(const Container&con, UnaryPredicate pred)->decltype(std::count_if(begin(con), end(con), pred))
+    {
+        return std::count_if(begin(con), end(con), pred);
+    }
+}
+
+#endif // CRYINCLUDE_CRYCOMMON_ALGORITHM_H