Boost C++ Libraries Home Libraries People FAQ More

PrevUpHomeNext

Function template join_if

boost::algorithm::join_if — Conditional join algorithm.

Synopsis

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


template<typename SequenceSequenceT, typename Range1T, typename CharT, 
         typename RegexTraitsT> 
   
  ( Input,  Separator, 
           Rx, 
           Flags = );

Description

This algorithm joins all strings in a 'list' into one long string. Segments are concatenated by given separator. Only segments that match the given regular expression will be added to the result

This is a specialization of join_if algorithm.

[Note] Note

This function provides the strong exception-safety guarantee

Parameters:

Flags

Regex options

Input

A container that holds the input strings. It must be a container-of-containers.

Rx

A regular expression

Separator

A string that will separate the joined segments.

Returns:

Concatenated string.


PrevUpHomeNext