Re: [Boost-bugs] [Boost C++ Libraries] #7775: Allow algorithm::join to accept a container of char*

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #7775: Allow algorithm::join to accept a container of char*
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-02-12 19:13:07

#7775: Allow algorithm::join to accept a container of char*
---------------------------------------------+------------------------------
  Reporter:  Sergey Mitsyn <svm at jinr.ru>  |       Owner:  marshall 
      Type:  Feature Requests                |      Status:  new      
 Milestone:  To Be Determined                |   Component:  algorithm
   Version:  Boost 1.52.0                    |    Severity:  Problem  
Resolution:                                  |    Keywords:           
---------------------------------------------+------------------------------

Comment (by marshall):

 The problem is not creating from an array of `char *`, but from a
 container of `char *`.

 `boost::algorithm::join` takes a "container (A) of containers (B)" and
 returns a "container (B)".

 When the (B) container is just "char *", it has no facility for creating
 such a container.
 {{{
 std::string arr[] = { "Hi", "Mom" };
 boost::algorithm::join(arr, ", ");
 }}}
 works fine (and returns a `std::string`)
 {{{
 std::vector<char *> strs;
 strs.push_back("Hello");
 strs.push_back("World!");
 joined = boost::algorithm::join(strs, ", ");
 }}}
 does not.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/7775#comment:1>
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