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unstable_remove_if.hpp
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1 // Range v3 library
3 //
4 // Copyright Andrey Diduh 2019
5 //
6 // Use, modification and distribution is subject to the
7 // Boost Software License, Version 1.0. (See accompanying
8 // file LICENSE_1_0.txt or copy at
9 // http://www.boost.org/LICENSE_1_0.txt)
10 //
11 // Project home: https://github.com/ericniebler/range-v3
12 //
13 #ifndef RANGES_V3_ACTION_UNSTABLE_REMOVE_IF_HPP
14 #define RANGES_V3_ACTION_UNSTABLE_REMOVE_IF_HPP
15 
16 #include <utility>
17 
18 #include <concepts/concepts.hpp>
19 
20 #include <range/v3/range_fwd.hpp>
21 
30 
31 #include <range/v3/detail/prologue.hpp>
32 
33 namespace ranges
34 {
37  namespace actions
38  {
40  {
41  template(typename C, typename P = identity)(
42  requires (!range<C>))
43  constexpr auto operator()(C pred, P proj = P{}) const
44  {
45  return make_action_closure(
46  bind_back(unstable_remove_if_fn{}, std::move(pred), std::move(proj)));
47  }
48 
49  template(typename Rng, typename C, typename P = identity)(
50  requires bidirectional_range<Rng> AND common_range<Rng> AND
52  indirect_unary_predicate<C, projected<iterator_t<Rng>, P>> AND
54  Rng operator()(Rng && rng, C pred, P proj = P{}) const
55  {
56  auto it = ranges::unstable_remove_if(ranges::begin(rng),
57  ranges::end(rng),
58  std::move(pred),
59  std::move(proj));
60  ranges::erase(rng, it, ranges::end(rng));
61  return static_cast<Rng &&>(rng);
62  }
63  };
64 
67  } // namespace actions
69 } // namespace ranges
70 
71 #include <range/v3/detail/epilogue.hpp>
72 
73 #endif // RANGES_V3_ACTION_UNSTABLE_REMOVE_IF_HPP
CPP_concept permutable
\concept permutable
Definition: concepts.hpp:840
CPP_concept indirect_unary_predicate
\concept indirect_unary_predicate
Definition: concepts.hpp:632
decltype(begin(declval(Rng &))) iterator_t
Definition: access.hpp:698
RANGES_INLINE_VARIABLE(detail::to_container_fn< detail::from_range< std::vector >>, to_vector) template< template< typename... > class ContT > auto to(RANGES_HIDDEN_DETAIL(detail
For initializing a container of the specified type with the elements of an Range.
Definition: conversion.hpp:399
CPP_concept erasable_range
\concept erasable_range
Definition: erase.hpp:76
defer< bind_back, Fn, Ts... > bind_back
Definition: meta.hpp:994
Definition: unstable_remove_if.hpp:40
Definition: identity.hpp:25