Re: [Boost-users] Tuple use/overuse?

From: Joel de Guzman (joel_at_[hidden])
Date: 2007-07-25 19:55:04

Richard Dingwall wrote:
> 
> 
> On 7/26/07, *Graham Reitz* <graham.cpp_at_[hidden] 
> <mailto:graham.cpp_at_[hidden]>> wrote:
> 
>     Ok good.  So it sounds like my concern isn't justified.
> 
>     To be certain.  Because of tuples I prefer this:
> 
>     typedef boost::tuples::tuple<unsigned int, double> some_pair;
>     typedef std::vector<some_pair > some_pairs;
> 
>     to this:
>     struct some_pair
>     { unsigned int i; double d; };
>     typedef std::vector<some_pair > some_pairs;
> 
>     Is tuples meant to be used like the first example?
> 
> 
> Pardon me if it's just a two-dimensional example for simplicity, but why 
> not use std::pair?

The op's intent is to use tuple instead of struct: "in situations where
I might use a struct I am tend to prefer a tuple". std::pair is ok if
the struct to be replaced has 2 elements. This is not always the case.

Regards,
-- 
Joel de Guzman
http://www.boost-consulting.com
http://spirit.sf.net