random map

From	Philipp Kraus <philipp.kraus@flashpixx.de>
Newsgroups	comp.lang.c++
Subject	random map
Date	2011-05-20 19:59 +0200
Organization	1&1 Internet AG
Message-ID	<ir6a6f$ekl$1@online.de> (permalink)

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Hello,

I habe a std::map and I would like to read k random key values. I have 
tried it with the iterator like:
randvalue between [0, std::mapsize-1]
(*(std::map::iterator.begin() + randvalue)).first

But this does not work, I'll get an error on stl_bvector.h with 
std::_Bit_iterator std::operator+. How can I get k random key values 
out of my map?

Thanks

Phil?

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random map Philipp Kraus <philipp.kraus@flashpixx.de> - 2011-05-20 19:59 +0200
  Re: random map Kai-Uwe Bux <jkherciueh@gmx.net> - 2011-05-20 20:12 +0200
    Re: random map Philipp Kraus <philipp.kraus@flashpixx.de> - 2011-05-20 20:18 +0200
  Re: random map Philipp Kraus <philipp.kraus@flashpixx.de> - 2011-05-20 20:36 +0200
  Re: random map Juha Nieminen <nospam@thanks.invalid> - 2011-05-20 20:33 +0000
    Re: random map Philipp Kraus <philipp.kraus@flashpixx.de> - 2011-05-21 08:11 +0200
      Re: random map Juha Nieminen <nospam@thanks.invalid> - 2011-05-21 08:32 +0000
        Re: random map Philipp Kraus <philipp.kraus@flashpixx.de> - 2011-05-21 13:20 +0200

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