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## Function template replace_regex

boost::replace_regex — Replace regex algorithm.

## Synopsis

    // In header: <boost/algorithm/string/regex.hpp>

    template<typename SequenceT, typename CharT, typename RegexTraitsT,
             typename FormatStringTraitsT, typename FormatStringAllocatorT>
      void replace_regex(SequenceT & Input,
                         const basic_regex< CharT, RegexTraitsT > & Rx,
                         const std::basic_string< CharT, FormatStringTraitsT, FormatStringAllocatorT > & Format,
                         match_flag_type Flags = match_default|format_default);

## Description

Search for a substring matching given regex and format it with the specified format. The input string is modified in-place.

Parameters: |
`Input` | An input string
`Rx` | A regular expression
`Format` | Regex format definition
`Flags` | Regex options