58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
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// Copyright (c) Facebook, Inc. and its affiliates.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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#include <folly/functional/Invoke.h>
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#include <limits>
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#include "yarpl/observable/Observable.h"
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#include "yarpl/observable/Subscription.h"
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namespace yarpl {
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namespace observable {
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template <>
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class Observable<void> {
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public:
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/**
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* Emit the sequence of numbers [start, start + count).
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*/
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static std::shared_ptr<Observable<int64_t>> range(
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int64_t start,
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int64_t count);
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template <typename T>
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static std::shared_ptr<Observable<T>> just(T&& value) {
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return Observable<folly::remove_cvref_t<T>>::just(std::forward<T>(value));
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}
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template <typename T>
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static std::shared_ptr<Observable<T>> justN(std::initializer_list<T> list) {
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return Observable<folly::remove_cvref_t<T>>::justN(std::move(list));
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}
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// this will generate an observable which can be subscribed to only once
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template <typename T>
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static std::shared_ptr<Observable<T>> justOnce(T&& value) {
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return Observable<folly::remove_cvref_t<T>>::justOnce(
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std::forward<T>(value));
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}
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private:
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Observable() = delete;
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};
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} // namespace observable
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} // namespace yarpl
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