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Re: unordered_map with valarray as key

From: unomas <unomas at correo dot ugr dot es>
To: <libstdc++ at gcc dot gnu dot org>
Date: Tue, 29 Oct 2013 20:07:30 +0100
Subject: Re: unordered_map with valarray as key
Authentication-results: sourceware.org; auth=none
References: <1382964043 dot 2909 dot 10 dot camel at do-what-u-should> <CAGNvRgALW8Wt-xfEb48Pj7GFKoiewAcz=3q4wPTq3dCpDr0fww at mail dot gmail dot com> <Pine dot LNX dot 4 dot 64 dot 1310281915350 dot 5295 at hal-00 dot csl dot cornell dot edu> <CAH6eHdShVREaC_ccvfVaze_02XvT+Mz2TnpLA5gt_Y+JGR7tJQ at mail dot gmail dot com>

The alternative is to define your own
hash function (not a specialization of std::hash) and use that with
the unordered container.


Maybe a solution like hash_combine provided by boost would be more easy

http://www.boost.org/doc/libs/1_54_0/doc/html/hash/reference.html#boost.hash_combine

Follow-Ups:
- Re: unordered_map with valarray as key
  - From: Paolo Carlini

References:
- unordered_map with valarray as key
  - From: Daniel Molina García
- Re: unordered_map with valarray as key
  - From: Daniel Krügler
- Re: unordered_map with valarray as key
  - From: David Fang
- Re: unordered_map with valarray as key
  - From: Jonathan Wakely

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