From: Adam Akhtar <adamtemporary@...>
Date: 2008-08-21T23:07:25+09:00
Subject: hahses and sort

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}
         }



so ive outlined this function

def order_statistics_by_str(some_items_statistics)
    some_items_statistics.sort do |one, another|
        ones_str = one[:str]
        another_str = another[:str]
        -ones_str <=> another_str
    end
end

however this
ones_str = one[:str] and  another_str = another[:str]
is bad syntax

im new to ruby and nested hashes and how to access them is proving to be
trick for me. how do i access what :str refers to.
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