From: "Bartosz Dziewoński" <matma.rex@...>
Date: 2011-08-19T16:14:37+09:00
Subject: Re: Sorting Ruby hash by value and stored the result in hash.

Hashes are not sorted. (In 1.9.1, there's just the side effect of the
order of keys not changing randomly.)

To convert an array like the one returned by Hash#sort_by back to
hash, use Hash[ arr ].

You may also try googling "ordered hash ruby", there are some
solutions. But it may be simpler to refactor your code, so it doesn'/t
need to order a hash anymore, or use two objects: regular hash +
sorted array of its keys.

-- Matma Rex



2011/8/19 kevin peter <sateesh.mca09@gmail.com>:
> Hi
>
> I have problem in storing the sorted hash result in hash again.
> for example
>
> hash = {:a => 10, :b => 5, :c => 20, :d => 15 }
>
> I have applied sorting as below using sort_by
>
> hash.sort_by{|key,value| value } => [[:b, 5], [:a, 10], [:d, 15], [:c,
> 20]]
>
>
> So here values are sorted but result is in array format.
>
> How to build hash from this array as below? i.e sorting by value ?
>
> {:b => 5, :a => 10, :d => 15, :c => 20}
>
> Thanks in advance
>
> --
> Posted via http://www.ruby-forum.com/.
>
>