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replace_copy_if.hpp
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1 // Range v3 library
3 //
4 // Copyright Eric Niebler 2014-present
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_ALGORITHM_REPLACE_COPY_IF_HPP
14 #define RANGES_V3_ALGORITHM_REPLACE_COPY_IF_HPP
15 
16 #include <meta/meta.hpp>
17 
18 #include <range/v3/range_fwd.hpp>
19 
20 #include <range/v3/algorithm/result_types.hpp>
29 #include <range/v3/utility/static_const.hpp>
30 
31 #include <range/v3/detail/prologue.hpp>
32 
33 namespace ranges
34 {
37  template<typename I, typename O>
38  using replace_copy_if_result = detail::in_out_result<I, O>;
39 
40  RANGES_FUNC_BEGIN(replace_copy_if)
41 
42 
43  template(typename I,
44  typename S,
45  typename O,
46  typename C,
47  typename T,
48  typename P = identity)(
49  requires input_iterator<I> AND sentinel_for<S, I> AND
50  output_iterator<O, T const &> AND
51  indirect_unary_predicate<C, projected<I, P>> AND
52  indirectly_copyable<I, O>)
53  constexpr replace_copy_if_result<I, O> RANGES_FUNC(replace_copy_if)(
54  I first, S last, O out, C pred, T const & new_value, P proj = {}) //
55  {
56  for(; first != last; ++first, ++out)
57  {
58  auto && x = *first;
59  if(invoke(pred, invoke(proj, x)))
60  *out = new_value;
61  else
62  *out = (decltype(x) &&)x;
63  }
64  return {first, out};
65  }
66 
68  template(typename Rng, typename O, typename C, typename T, typename P = identity)(
69  requires input_range<Rng> AND output_iterator<O, T const &> AND
70  indirect_unary_predicate<C, projected<iterator_t<Rng>, P>> AND
72  constexpr replace_copy_if_result<borrowed_iterator_t<Rng>, O> RANGES_FUNC(replace_copy_if)(
73  Rng && rng, O out, C pred, T const & new_value, P proj = {}) //
74  {
75  return (*this)(begin(rng),
76  end(rng),
77  std::move(out),
78  std::move(pred),
79  new_value,
80  std::move(proj));
81  }
82 
83  RANGES_FUNC_END(replace_copy_if)
84 
85  namespace cpp20
86  {
87  using ranges::replace_copy_if;
88  using ranges::replace_copy_if_result;
89  } // namespace cpp20
91 } // namespace ranges
92 
93 #include <range/v3/detail/epilogue.hpp>
94 
95 #endif
template(typename Rng, typename O, typename C, typename T, typename P=identity)(requires input_range< Rng > AND output_iterator< O
This is an overloaded member function, provided for convenience. It differs from the above function o...
CPP_concept sentinel_for
\concept sentinel_for
Definition: concepts.hpp:306
CPP_concept output_iterator
\concept output_iterator
Definition: concepts.hpp:347
CPP_concept indirect_unary_predicate
\concept indirect_unary_predicate
Definition: concepts.hpp:632
CPP_concept input_iterator
\concept input_iterator
Definition: concepts.hpp:362
CPP_concept indirectly_copyable
\concept indirectly_copyable
Definition: concepts.hpp:782
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
Tiny meta-programming library.
Definition: identity.hpp:25