ceph/src/boost/libs/range/doc/reference/algorithm/replace_if.qbk

   1 [/
   2     Copyright 2010 Neil Groves
   3     Distributed under the Boost Software License, Version 1.0.
   4     (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5 /]
   6 [section:replace_if replace_if]
   7
   8 [heading Prototype]
   9
  10 ``
  11 template<class ForwardRange, class UnaryPredicate, class Value>
  12 ForwardRange& replace_if(ForwardRange& rng, UnaryPredicate pred, const Value& with_what);
  13
  14 template<class ForwardRange, class UnaryPredicate, class Value>
  15 const ForwardRange& replace_if(const ForwardRange& rng, UnaryPredicate pred, const Value& with_what);
  16 ``
  17
  18 [heading Description]
  19
  20 `replace_if` replaces every element `x` in `rng` for which `pred(x) == true` with `with_what`. Returns a reference to `rng`.
  21
  22 [heading Definition]
  23
  24 Defined in the header file `boost/range/algorithm/replace_if.hpp`
  25
  26 [heading Requirements]
  27
  28 * `ForwardRange` is a model of the __forward_range__ Concept.
  29 * `ForwardRange` is mutable.
  30 * `UnaryPredicate` is a model of the `PredicateConcept`
  31 * `ForwardRange`'s value type is convertible to `UnaryPredicate`'s argument type.
  32 * `Value` is convertible to `ForwardRange`'s value type.
  33 * `Value` is a model of the `AssignableConcept`.
  34
  35 [heading Complexity]
  36
  37 Linear. `replace_if` performs exactly `distance(rng)` applications of `pred`, and at most `distance(rng)` assignments.
  38
  39 [endsect]
  40
  41