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diff --git a/Rx/v2/src/rxcpp/operators/rx-start_with.hpp b/Rx/v2/src/rxcpp/operators/rx-start_with.hpp
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--- a/Rx/v2/src/rxcpp/operators/rx-start_with.hpp
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@@ -1,84 +0,0 @@
-// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
-
-#pragma once
-
-/*! \file rx-start_with.hpp
-
- \brief Start with the supplied values, then concatenate this observable.
-
- \tparam Value0 ...
- \tparam ValueN the type of sending values
-
- \param v0 ...
- \param vn values to send
-
- \return Observable that emits the specified items and then emits the items emitted by the source observable.
-
- \sample
- \snippet start_with.cpp short start_with sample
- \snippet output.txt short start_with sample
-
- Another form of this operator, rxcpp::observable<void, void>::start_with, gets the source observable as a parameter:
- \snippet start_with.cpp full start_with sample
- \snippet output.txt full start_with sample
-*/
-
-#if !defined(RXCPP_OPERATORS_RX_START_WITH_HPP)
-#define RXCPP_OPERATORS_RX_START_WITH_HPP
-
-#include "../rx-includes.hpp"
-#include "./rx-concat.hpp"
-
-namespace rxcpp {
-
-namespace operators {
-
-namespace detail {
-
-template<class... AN>
-struct start_with_invalid_arguments {};
-
-template<class... AN>
-struct start_with_invalid : public rxo::operator_base<start_with_invalid_arguments<AN...>> {
- using type = observable<start_with_invalid_arguments<AN...>, start_with_invalid<AN...>>;
-};
-template<class... AN>
-using start_with_invalid_t = typename start_with_invalid<AN...>::type;
-
-}
-
-/*! @copydoc rx-start_with.hpp
-*/
-template<class... AN>
-auto start_with(AN&&... an)
- -> operator_factory<start_with_tag, AN...> {
- return operator_factory<start_with_tag, AN...>(std::make_tuple(std::forward<AN>(an)...));
-}
-
-}
-
-template<>
-struct member_overload<start_with_tag>
-{
- template<class Observable, class Value0, class... ValueN,
- class Enabled = rxu::enable_if_all_true_type_t<
- is_observable<Observable>>,
- class From = decltype(rxs::from(rxu::decay_t<Value0>(std::declval<Value0>()), rxu::decay_t<ValueN>(std::declval<ValueN>())...))
- >
- static auto member(Observable&& o, Value0&& v0, ValueN&&... vn)
- -> decltype(member_overload<concat_tag>::member(std::declval<From>(), std::forward<Observable>(o))) {
- auto first = rxs::from(rxu::decay_t<Value0>(v0), rxu::decay_t<ValueN>(vn)...);
- return member_overload<concat_tag>::member(first, std::forward<Observable>(o));
- }
-
- template<class... AN>
- static operators::detail::start_with_invalid_t<AN...> member(const AN&...) {
- std::terminate();
- return {};
- static_assert(sizeof...(AN) == 10000, "start_with takes (Value0, optional ValueN...)");
- }
-};
-
-}
-
-#endif