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Groups > comp.lang.c++ > #5216
| From | Philipp Kraus <philipp.kraus@flashpixx.de> |
|---|---|
| Newsgroups | comp.lang.c++ |
| Subject | Re: random map |
| Date | 2011-05-20 20:18 +0200 |
| Organization | 1&1 Internet AG |
| Message-ID | <ir6b9t$fi9$1@online.de> (permalink) |
| References | <ir6a6f$ekl$1@online.de> <ir6atv$sph$1@hoshi.visyn.net> |
On 2011-05-20 20:12:15 +0200, Kai-Uwe Bux said: > Philipp Kraus wrote: > >> 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? > > Quick question: Do you want to allow repetitions or do you want k distinct > random keys? I can use repetitions, so I don't need a unique set 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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