Re: [Boost-users] [MultiIndex] is it possible to create multi-key key-extractors?

Subject: Re: [Boost-users] [MultiIndex] is it possible to create multi-key key-extractors?
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2010-08-08 20:29:49

AMDG

Mostafa wrote:
> For the following struct:
>
> struct Flower
> {
>   int type;
>   string name;
>   std::list<string> aliases;
> };
>
> I want to create a multiindexed container that indexes Flower objects 
> by type, name, and aliases, where aliases is some iteratable 
> collection of strings.  I just don't know if it's possible to create a 
> multi-key key-extractor for aliases.  So far I've come up with the 
> following:

I assume that you want to be able to look up
the Flower from a string, which should be
one of the aliases?  You can't do this with
multi-index.  A single object corresponds to
a single key.

In Christ,
Steven Watanabe