From: Farrel Lifson <farrel.lifson@...>
Date: 2008-08-21T23:34:37+09:00
Subject: Re: hahses and sort

2008/8/21 Adam Akhtar <adamtemporary@gmail.com>:
> i have a hash whose values are hashes themselves like this
>
> stats_hash =
>         {
>         "fourth"=> {:total_completed=>1, :total_sold=>1, :str=>0.0},
>         "third"=> {:total_completed=>1, :total_sold=>0, :str=>25.0},
>         "second"=>{:total_completed=>1, :total_sold=>0, :str=>50.0},
>         "first"=>{:total_completed=>1, :total_sold=>0, :str=>90.0}
>         }
>
> and I want to order the hash in decending order based on the the value
> :str
>
> to give
>
> {
>         "first"=>{:total_completed=>1, :total_sold=>0, :str=>90.0},
>         "second"=>{:total_completed=>1, :total_sold=>0, :str=>50.0},
>         "third"=> {:total_completed=>1, :total_sold=>0, :str=>25.0},
>         "fourth"=> {:total_completed=>1, :total_sold=>1, :str=>0.0}
>         }

In general hashes are not ordered data structures.

Farrel
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