From: "Kroeger, Simon (ext)" <simon.kroeger.ext@...>
Date: 2006-04-27T22:21:00+09:00
Subject: Re: Sorting with Hash

Sorry, after reading your post again I guess I haven't
understand your problem. 

Standard Hashes are not sorted, never. If you call
sort on a Hash you get nested arrays.

[["a", 10], ["b", 30], ["c", 20]]

if you want to iterate over this array just use each.

c.each{|k, v| do_something(k, v)}

if you want the value corresponding to a key use assoc.

c.assoc('b') #=> 30

(but this is slow on large arrays)

Hth

Simon

> -----Original Message-----
> From: Kroeger, Simon (ext) 
> Sent: Thursday, April 27, 2006 3:10 PM
> To: ruby-talk ML
> Subject: Re: Sorting with Hash
> 
> Hi Dinesh!
> 
> h = { "c" => 20, "b" => 30, "a" => 10  }
> c = h.keys.sort.map{|k| [k, h[k]]}
> 
> puts c
> puts '======='
> puts c[0]
> 
> cheers
> 
> Simon 
> 
> > -----Original Message-----
> > From: list-bounce@example.com 
> > [mailto:list-bounce@example.com] On Behalf Of Dinesh Umanath
> > Sent: Thursday, April 27, 2006 2:52 PM
> > To: ruby-talk ML
> > Subject: Sorting with Hash
> > 
> > Hi all,
> > 
> > I have a hash like this and i want to sort. After sorting i 
> > want the key 
> > and value seperately. like say
> > 
> > c=Hash.new
> > h = { "c" => 20, "b" => 30, "a" => 10  }
> > 
> > c = h.sort
> > puts c
> > ====>which will result in
> > a
> > 10
> > b
> > 30
> > c
> > 20
> > 
> > puts c[0]
> > ===>which will result in
> > a
> > 10
> > 
> > Now after we have sorted i want to fetch the individual 
> > key/value like 
> > we know 'a' is the key and 10 is the value above. How can 
> we get them 
> > individually (key/value after we sort)  any methods are there 
> > ? pl help 
> > me out..
> > 
> > We are storing the sorted result in another hash c.
> > 
> > Can we get the individual key/value pairs from this c. (which 
> > is sorted) 
> > ??
> > 
> > Or is there any other other way to do ?
> > 
> > Thank You.
> > Dinesh
> > 
> > 
> > 
> > -- 
> > Posted via http://www.ruby-forum.com/.
> > 
> > 
> 
>