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Pranav Srinivas Kumar
@@ -32,57 +32,44 @@ SOFTWARE.
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#include <type_traits>
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#include <utility>
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namespace indicators {
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namespace indicators{
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namespace details {
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namespace details{
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template <bool condition> struct if_else;
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template <bool condition>
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struct if_else;
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template <> struct if_else<true> { using type = std::true_type; };
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template<>
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struct if_else<true>{
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using type = std::true_type;
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};
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template <> struct if_else<false> { using type = std::false_type; };
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template<>
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struct if_else<false>{
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using type = std::false_type ;
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};
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template <bool condition, typename True, typename False> struct if_else_type;
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template <bool condition, typename True, typename False>
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struct if_else_type;
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template <typename True, typename False>
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struct if_else_type<true, True, False>{
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template <typename True, typename False> struct if_else_type<true, True, False> {
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using type = True;
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};
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template <typename True, typename False>
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struct if_else_type<false, True, False>{
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template <typename True, typename False> struct if_else_type<false, True, False> {
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using type = False;
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};
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template <typename... Ops>
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struct conjuction;
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template <typename... Ops> struct conjuction;
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template <>
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struct conjuction<> : std::true_type {};
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template <> struct conjuction<> : std::true_type {};
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template <typename Op, typename... TailOps>
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struct conjuction<Op, TailOps...> : if_else_type<!Op::value, std::false_type, conjuction<TailOps...>>::type {};
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struct conjuction<Op, TailOps...>
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: if_else_type<!Op::value, std::false_type, conjuction<TailOps...>>::type {};
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template <typename... Ops>
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struct disjunction;
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template <typename... Ops> struct disjunction;
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template <>
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struct disjunction<> : std::false_type {};
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template <> struct disjunction<> : std::false_type {};
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template <typename Op, typename... TailOps>
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struct disjunction<Op, TailOps...> : if_else_type<Op::value, std::true_type, disjunction<TailOps...>>::type {};
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struct disjunction<Op, TailOps...>
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: if_else_type<Op::value, std::true_type, disjunction<TailOps...>>::type {};
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enum class ProgressBarOption{
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bar_width=0,
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enum class ProgressBarOption {
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bar_width = 0,
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prefix_text,
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postfix_text,
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start,
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@@ -101,12 +88,12 @@ enum class ProgressBarOption{
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spinner_states
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};
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template <typename T, ProgressBarOption Id>
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struct Setting{
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template <typename... Args, typename = typename std::enable_if<std::is_constructible<T, Args...>::value>::type>
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explicit Setting(Args&&... args) : value(std::forward<Args>(args)...){}
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Setting(const Setting&) = default;
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Setting(Setting&&) = default;
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template <typename T, ProgressBarOption Id> struct Setting {
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template <typename... Args,
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typename = typename std::enable_if<std::is_constructible<T, Args...>::value>::type>
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explicit Setting(Args &&... args) : value(std::forward<Args>(args)...) {}
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Setting(const Setting &) = default;
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Setting(Setting &&) = default;
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static constexpr auto id = Id;
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using type = T;
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@@ -114,109 +101,100 @@ struct Setting{
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T value{};
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};
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template <typename T>
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struct is_setting : std::false_type{};
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template <typename T> struct is_setting : std::false_type {};
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template <ProgressBarOption Id, typename T>
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struct is_setting<Setting<T, Id>> : std::true_type{};
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template <ProgressBarOption Id, typename T> struct is_setting<Setting<T, Id>> : std::true_type {};
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template <typename... Args>
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struct are_settings : if_else<conjuction<is_setting<Args>...>::value>::type {};
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template <>
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struct are_settings<> : std::true_type{};
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template <> struct are_settings<> : std::true_type {};
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template<typename Setting, typename Tuple>
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struct is_setting_from_tuple;
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template <typename Setting, typename Tuple> struct is_setting_from_tuple;
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template<typename Setting>
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struct is_setting_from_tuple<Setting, std::tuple<>> : std::true_type {};
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template <typename Setting> struct is_setting_from_tuple<Setting, std::tuple<>> : std::true_type {};
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template <typename Setting, typename... TupleTypes>
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struct is_setting_from_tuple<Setting, std::tuple<TupleTypes...>> :
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if_else<disjunction<std::is_same<Setting, TupleTypes>...>::value>::type {};
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struct is_setting_from_tuple<Setting, std::tuple<TupleTypes...>>
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: if_else<disjunction<std::is_same<Setting, TupleTypes>...>::value>::type {};
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template <typename Tuple, typename... Settings>
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struct are_settings_from_tuple : if_else<conjuction<is_setting_from_tuple<Settings, Tuple>...>::value>::type {};
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struct are_settings_from_tuple
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: if_else<conjuction<is_setting_from_tuple<Settings, Tuple>...>::value>::type {};
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template <ProgressBarOption Id> struct always_true { static constexpr auto value = true; };
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template <ProgressBarOption Id>
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struct always_true{
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static constexpr auto value = true;
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};
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template<ProgressBarOption Id, typename Default>
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Default&& get_impl(Default&& def){
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template <ProgressBarOption Id, typename Default> Default &&get_impl(Default &&def) {
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return std::forward<Default>(def);
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}
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template <ProgressBarOption Id, typename Default, typename T, typename... Args>
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auto get_impl(Default&& def, T&& first, Args&&... tail) -> typename std::enable_if<
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(std::decay<T>::type::id == Id),
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decltype(std::forward<T>(first))>
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::type{
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return std::forward<T>(first);
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auto get_impl(Default &&def, T &&first, Args &&... tail) ->
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typename std::enable_if<(std::decay<T>::type::id == Id),
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decltype(std::forward<T>(first))>::type {
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return std::forward<T>(first);
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}
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template <ProgressBarOption Id, typename Default, typename T, typename... Args>
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auto get_impl(Default&& def, T&& first, Args&&... tail) -> typename std::enable_if<
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(std::decay<T>::type::id != Id),
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decltype(get_impl<Id>(std::forward<Default>(def), std::forward<Args>(tail)...))>::type{
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auto get_impl(Default &&def, T &&first, Args &&... tail) ->
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typename std::enable_if<(std::decay<T>::type::id != Id),
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decltype(get_impl<Id>(std::forward<Default>(def),
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std::forward<Args>(tail)...))>::type {
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return get_impl<Id>(std::forward<Default>(def), std::forward<Args>(tail)...);
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}
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template <ProgressBarOption Id, typename Default, typename... Args, typename = typename std::enable_if<are_settings<Args...>::value, void>::type>
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auto get(Default&& def, Args&&... args) -> decltype(details::get_impl<Id>(std::forward<Default>(def), std::forward<Args>(args)...)){
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template <ProgressBarOption Id, typename Default, typename... Args,
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typename = typename std::enable_if<are_settings<Args...>::value, void>::type>
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auto get(Default &&def, Args &&... args)
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-> decltype(details::get_impl<Id>(std::forward<Default>(def), std::forward<Args>(args)...)) {
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return details::get_impl<Id>(std::forward<Default>(def), std::forward<Args>(args)...);
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}
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template <ProgressBarOption Id>
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using StringSetting = Setting<std::string, Id>;
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template <ProgressBarOption Id> using StringSetting = Setting<std::string, Id>;
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template <ProgressBarOption Id>
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using IntegerSetting = Setting<std::size_t, Id>;
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template <ProgressBarOption Id> using IntegerSetting = Setting<std::size_t, Id>;
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template <ProgressBarOption Id>
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using BooleanSetting = Setting<bool, Id>;
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template <ProgressBarOption Id> using BooleanSetting = Setting<bool, Id>;
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template <ProgressBarOption Id, typename Tuple, std::size_t counter =0>
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struct option_idx;
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template <ProgressBarOption Id, typename Tuple, std::size_t counter = 0> struct option_idx;
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template <ProgressBarOption Id, typename T, typename... Settings, std::size_t counter>
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struct option_idx<Id, std::tuple<T, Settings...>, counter> : if_else_type<(Id == T::id),
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std::integral_constant<std::size_t, counter>,
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option_idx<Id, std::tuple<Settings...>, counter+1>>::type{};
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struct option_idx<Id, std::tuple<T, Settings...>, counter>
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: if_else_type<(Id == T::id), std::integral_constant<std::size_t, counter>,
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option_idx<Id, std::tuple<Settings...>, counter + 1>>::type {};
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template <ProgressBarOption Id, std::size_t counter>
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struct option_idx<Id, std::tuple<>, counter>{
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template <ProgressBarOption Id, std::size_t counter> struct option_idx<Id, std::tuple<>, counter> {
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static_assert(always_true<(ProgressBarOption)Id>::value, "No such option was found");
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};
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template <ProgressBarOption Id, typename Settings>
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auto get_value(Settings&& settings) -> decltype((std::get<option_idx<Id, typename std::decay<Settings>::type>::value>(std::declval<Settings&&>()))){
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return std::get<option_idx<Id, typename std::decay<Settings>::type>::value>(std::forward<Settings>(settings));
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auto get_value(Settings &&settings)
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-> decltype((std::get<option_idx<Id, typename std::decay<Settings>::type>::value>(
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std::declval<Settings &&>()))) {
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return std::get<option_idx<Id, typename std::decay<Settings>::type>::value>(
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std::forward<Settings>(settings));
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}
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}
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} // namespace details
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namespace option{
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using BarWidth = details::IntegerSetting<details::ProgressBarOption::bar_width>;
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using PrefixText = details::StringSetting<details::ProgressBarOption::prefix_text>;
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using PostfixText = details::StringSetting<details::ProgressBarOption::postfix_text>;
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using Start = details::StringSetting<details::ProgressBarOption::start>;
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using End = details::StringSetting<details::ProgressBarOption::end>;
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using Fill = details::StringSetting<details::ProgressBarOption::fill>;
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using Lead = details::StringSetting<details::ProgressBarOption::lead>;
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using Remainder = details::StringSetting<details::ProgressBarOption::remainder>;
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using MaxPostfixTextLen = details::IntegerSetting<details::ProgressBarOption::max_postfix_text_len>;
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using Completed = details::BooleanSetting<details::ProgressBarOption::completed>;
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using ShowPercentage = details::BooleanSetting<details::ProgressBarOption::show_percentage>;
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using ShowElapsedTime = details::BooleanSetting<details::ProgressBarOption::show_elapsed_time>;
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using ShowRemainingTime = details::BooleanSetting<details::ProgressBarOption::show_remaining_time>;
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using SavedStartTime = details::BooleanSetting<details::ProgressBarOption::saved_start_time>;
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using ForegroundColor = details::Setting<Color, details::ProgressBarOption::foreground_color>;
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using ShowSpinner = details::BooleanSetting<details::ProgressBarOption::spinner_show>;
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using SpinnerStates = details::Setting<std::vector<std::string>, details::ProgressBarOption::spinner_states>;
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}
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}
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namespace option {
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using BarWidth = details::IntegerSetting<details::ProgressBarOption::bar_width>;
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using PrefixText = details::StringSetting<details::ProgressBarOption::prefix_text>;
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using PostfixText = details::StringSetting<details::ProgressBarOption::postfix_text>;
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using Start = details::StringSetting<details::ProgressBarOption::start>;
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using End = details::StringSetting<details::ProgressBarOption::end>;
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using Fill = details::StringSetting<details::ProgressBarOption::fill>;
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using Lead = details::StringSetting<details::ProgressBarOption::lead>;
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using Remainder = details::StringSetting<details::ProgressBarOption::remainder>;
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using MaxPostfixTextLen = details::IntegerSetting<details::ProgressBarOption::max_postfix_text_len>;
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using Completed = details::BooleanSetting<details::ProgressBarOption::completed>;
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using ShowPercentage = details::BooleanSetting<details::ProgressBarOption::show_percentage>;
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using ShowElapsedTime = details::BooleanSetting<details::ProgressBarOption::show_elapsed_time>;
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using ShowRemainingTime = details::BooleanSetting<details::ProgressBarOption::show_remaining_time>;
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using SavedStartTime = details::BooleanSetting<details::ProgressBarOption::saved_start_time>;
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using ForegroundColor = details::Setting<Color, details::ProgressBarOption::foreground_color>;
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using ShowSpinner = details::BooleanSetting<details::ProgressBarOption::spinner_show>;
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using SpinnerStates =
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details::Setting<std::vector<std::string>, details::ProgressBarOption::spinner_states>;
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} // namespace option
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} // namespace indicators
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