52 lines
981 B
C++
52 lines
981 B
C++
// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
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#pragma once
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#if !defined(RXCPP_SOURCES_RX_NEVER_HPP)
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#define RXCPP_SOURCES_RX_NEVER_HPP
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#include "../rx-includes.hpp"
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/*! \file rx-never.hpp
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\brief Returns an observable that never sends any items or notifications to observer.
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\tparam T the type of (not) emitted items
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\return Observable that never sends any items or notifications to observer.
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\sample
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\snippet never.cpp never sample
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\snippet output.txt never sample
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*/
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namespace rxcpp {
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namespace sources {
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namespace detail {
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template<class T>
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struct never : public source_base<T>
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{
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template<class Subscriber>
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void on_subscribe(Subscriber) const {
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}
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};
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}
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/*! @copydoc rx-never.hpp
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*/
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template<class T>
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auto never()
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-> observable<T, detail::never<T>> {
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return observable<T, detail::never<T>>(detail::never<T>());
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}
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}
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}
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#endif
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