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skyrpex/main.cpp

Last active October 17, 2015 10:28
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Revisions

  1. skyrpex revised this gist Oct 17, 2015. 1 changed file with 6 additions and 0 deletions.
    6 changes: 6 additions & 0 deletions main.cpp
    View file
    Original file line number Diff line number Diff line change
    @@ -34,6 +34,12 @@ class Container
    {
    optional<C>(index).emplace(args...);
    }

    template<class C>
    bool has(std::size_t index) const
    {
    return optional<C>(index);
    }

    protected:
    template<class C>
  2. skyrpex revised this gist Oct 17, 2015. 1 changed file with 10 additions and 10 deletions.
    20 changes: 10 additions & 10 deletions main.cpp
    View file
    Original file line number Diff line number Diff line change
    @@ -8,8 +8,8 @@ class Container
    {
    public:
    template<class T> using Optional = std::experimental::optional<T>;
    std::vector<std::tuple<Optional<Cs>...>> elements_;

    std::vector<std::tuple<Optional<Cs>...>> elements;

    template<class C>
    C get(std::size_t index) const
    @@ -24,35 +24,35 @@ class Container
    }

    template<class C>
    void set(std::size_t index, const C &c)
    void set(std::size_t index, const C& c)
    {
    optional<C>(index) = c;
    }

    template<class C, class ...Args>
    void emplace(std::size_t index, Args &&...args)
    template<class C, class... Args>
    void emplace(std::size_t index, Args&&... args)
    {
    optional<C>(index).emplace(args...);
    }

    protected:
    template<class C>
    const Optional<C> &optional(std::size_t index) const
    const Optional<C>& optional(std::size_t index) const
    {
    return std::get<Optional<C>>(elements_.at(index));
    return std::get<Optional<C>>(elements.at(index));
    }

    template<class C>
    Optional<C> &optional(std::size_t index)
    Optional<C>& optional(std::size_t index)
    {
    return std::get<Optional<C>>(elements_.at(index));
    return std::get<Optional<C>>(elements.at(index));
    }
    };

    int main()
    {
    Container<int, double> container;
    container.elements_.resize(10);
    container.elements.resize(10);
    container.emplace<int>(0, 69);
    std::cout << container.get<int>(0) << std::endl;
    return 0;
  3. skyrpex created this gist Oct 17, 2015.
    59 changes: 59 additions & 0 deletions main.cpp
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,59 @@
    #include <iostream>
    #include <tuple>
    #include <vector>
    #include <experimental/optional>

    template<class ...Cs>
    class Container
    {
    public:
    template<class T> using Optional = std::experimental::optional<T>;

    std::vector<std::tuple<Optional<Cs>...>> elements_;

    template<class C>
    C get(std::size_t index) const
    {
    return optional<C>(index).value();
    }

    template<class C>
    C get(std::size_t index, C&& defaultValue) const
    {
    return optional<C>(index).value_or(std::move(defaultValue));
    }

    template<class C>
    void set(std::size_t index, const C &c)
    {
    optional<C>(index) = c;
    }

    template<class C, class ...Args>
    void emplace(std::size_t index, Args &&...args)
    {
    optional<C>(index).emplace(args...);
    }

    protected:
    template<class C>
    const Optional<C> &optional(std::size_t index) const
    {
    return std::get<Optional<C>>(elements_.at(index));
    }

    template<class C>
    Optional<C> &optional(std::size_t index)
    {
    return std::get<Optional<C>>(elements_.at(index));
    }
    };

    int main()
    {
    Container<int, double> container;
    container.elements_.resize(10);
    container.emplace<int>(0, 69);
    std::cout << container.get<int>(0) << std::endl;
    return 0;
    }