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/*
* Copyright 2025 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
namespace android::ftl {
// An alternative to `std::ignore` that makes it easy to ignore multiple values.
//
// Examples:
//
// void ftl_ignore_multiple(int arg1, const char* arg2, std::string arg3) {
// // When invoked, all the arguments are ignored.
// ftl::ignore(arg1, arg2, arg3);
// }
//
// void ftl_ignore_single(int arg) {
// // It can be used like std::ignore to ignore a single value
// ftl::ignore = arg;
// }
//
inline constexpr struct {
// NOLINTNEXTLINE(misc-unconventional-assign-operator, readability-named-parameter)
constexpr auto operator=(auto&&) const -> decltype(*this) { return *this; }
// NOLINTNEXTLINE(readability-named-parameter)
constexpr void operator()(auto&&...) const {}
} ignore;
} // namespace android::ftl
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