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adjacent_remove_if.hpp
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1
2// Range v3 library
3//
4// Copyright Eric Niebler
5// Copyright Christopher Di Bella
6//
7// Use, modification and distribution is subject to the
8// Boost Software License, Version 1.0. (See accompanying
9// file LICENSE_1_0.txt or copy at
10// http://www.boost.org/LICENSE_1_0.txt)
11//
12// Project home: https://github.com/ericniebler/range-v3
13//
14#ifndef RANGES_V3_ALGORITHM_ADJACENT_REMOVE_IF_HPP
15#define RANGES_V3_ALGORITHM_ADJACENT_REMOVE_IF_HPP
16
17#include <functional>
18#include <utility>
19
21
32#include <range/v3/utility/static_const.hpp>
33
34#include <range/v3/detail/prologue.hpp>
35
36namespace ranges
37{
40 RANGES_FUNC_BEGIN(adjacent_remove_if)
47 template(typename I, typename S, typename Pred, typename Proj = identity)(
48 requires permutable<I> AND sentinel_for<S, I> AND
49 indirect_relation<Pred, projected<I, Proj>>)
50 constexpr I RANGES_FUNC(adjacent_remove_if)(I first, S last, Pred pred = {}, Proj proj = {})
51 {
52 first = adjacent_find(std::move(first), last, ranges::ref(pred), ranges::ref(proj));
53 if(first == last)
54 return first;
55
56 auto i = first;
57 for(auto j = ++i; ++j != last; ++i)
58 {
59 if(!invoke(pred, invoke(proj, *i), invoke(proj, *j)))
60 {
61 *first = iter_move(i);
62 ++first;
63 }
64 }
65
66 *first = iter_move(i);
67 ++first;
68 return first;
69 }
70
72 template(typename Rng, typename Pred, typename Proj = identity)(
73 requires forward_range<Rng> AND
74 indirect_relation<Pred, projected<iterator_t<Rng>, Proj>> AND
76 constexpr borrowed_iterator_t<Rng>
77 RANGES_FUNC(adjacent_remove_if)(Rng && rng, Pred pred, Proj proj = {}) //
78 {
79 return (*this)(begin(rng), end(rng), std::move(pred), std::move(proj));
80 }
81 RANGES_FUNC_END(adjacent_remove_if)
82
83 namespace cpp20
84 {
85 using ranges::adjacent_remove_if;
86 }
88} // namespace ranges
89
90#include <range/v3/detail/epilogue.hpp>
91
92#endif // RANGES_V3_ALGORITHM_ADJACENT_REMOVE_IF_HPP
The forward_range concept.
The indirect_relation concept.
The permutable concept.
The sentinel_for concept.
decltype(begin(declval(Rng &))) iterator_t
Definition access.hpp:698
typename Fn::template invoke< Args... > invoke
Evaluate the invocable Fn with the arguments Args.
Definition meta.hpp:541
front< Pair > first
Retrieve the first element of the pair Pair.
Definition meta.hpp:2251
Definition identity.hpp:25