Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

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replace
Description

Replaces each value within a sequence of a given type and value with a new value.

Synopsis
template<
    typename Sequence,
    typename T
    >
typename result_of::replace<Sequence const, T>::type replace(
    Sequence const& seq, T const& old_value, T const& new_value);

Table 1.67. Parameters

Parameter

Requirement

Description

seq

A model of Forward Sequence, e == old_value is a valid expression, convertible to bool, for each element e in seq with type convertible to T

Operation's argument

old_value

Any type

Value to replace

new_value

Any type

Replacement value


Expression Semantics
replace(seq, old_value, new_value);

Return type: A model of Forward Sequence.

Semantics: Returns a new sequence with all the values of seq with new_value assigned to elements with the same type and equal to old_value.

Complexity

Constant. Returns a view which is lazily evaluated.

Header
#include <boost/fusion/algorithm/transformation/replace.hpp>
#include <boost/fusion/include/replace.hpp>
Example
assert(replace(make_vector(1,2), 2, 3) == make_vector(1,3));

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