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replaced_if
replaced_if example

Syntax

Code

Pipe

rng | boost::adaptors::replaced_if(pred, new_value)

Function

boost::adaptors::replace_if(rng, pred, new_value)

#include <boost/range/adaptor/replaced_if.hpp>
#include <boost/range/algorithm/copy.hpp>
#include <boost/assign.hpp>
#include <iterator>
#include <iostream>
#include <vector>

struct is_even
{
    bool operator()(int x) const { return x % 2 == 0; }
};

int main(int argc, const char* argv[])
{
    using namespace boost::adaptors;
    using namespace boost::assign;

    std::vector<int> input;
    input += 1,2,3,4,5,6,7,8,9;

    boost::copy(
        input | replaced_if(is_even(), 10),
        std::ostream_iterator<int>(std::cout, ","));

    return 0;
}

This would produce the output:

1,10,3,10,5,10,7,10,9,


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