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

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #2982: Required Arguments
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2009-11-04 12:08:04

#2982: Required Arguments
 Reporter: David Doria <daviddoria@…> | 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 |

Comment(by s.ochsenknecht@…):

 I implemented option (1), see patch_ticket2982_2.diff and the attached
 testcase required.cpp.

 store() now adds empty variable_value's to the variable_map. I also
 override the count() method of the underlying std::map in that way that
 the empty variable_values are not counted.

 Hm, this can have some side effects when operator[] is used:
 const variable_value& operator[](const std::string& name) const

 But I think the user has to check for !empty() anyhow ..!?

 Please comment.

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