27 lines
721 B
C++
27 lines
721 B
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#pragma once
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#include <rpl/producer.h>
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namespace rpl {
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template <
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typename Creator,
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typename Value = typename decltype(std::declval<Creator>()())::value_type,
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typename Error = typename decltype(std::declval<Creator>()())::error_type>
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inline auto deferred(Creator &&creator) {
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return make_producer<Value, Error>([
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creator = std::forward<Creator>(creator)
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](const auto &consumer) mutable {
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return std::move(creator)().start_existing(consumer);
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});
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}
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} // namespace rpl
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