[Boost-bugs] [Boost C++ Libraries] #2982: Required Arguments

Subject: [Boost-bugs] [Boost C++ Libraries] #2982: Required Arguments
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2009-04-30 18:29:49

#2982: Required Arguments
------------------------------------------------+---------------------------
 Reporter:  David Doria <daviddoria_at_[hidden]>  |       Owner:  vladimir_prus  
     Type:  Feature Requests                    |      Status:  new            
Milestone:  Boost 1.39.0                        |   Component:  program_options
  Version:  Boost Development Trunk             |    Severity:  Not Applicable 
 Keywords:  Required Arguments                  |  
------------------------------------------------+---------------------------
 If I have a list of 10 parameters, and all are required,

 I end up with a giant block of these:

 if(!vm.count("input"))
     {
         std::cout << "Input was not set." << std::endl;
         exit(-1);
     }

 It would be nice to do something like:
 desc.add_options()
             ("input", po::value<std::string>(&InputFile)->required(), "Set
 input file.")

 That will perform that check automatically.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/2982>
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