From: Mark Probert <probertm@...>
Date: 2003-01-04T02:57:55+09:00
Subject: Re: sort the hash keys


Hi, Guy.

At 11:42 PM 1/3/2003 +0900, Guy wrote:
> >>>>> "M" == Mark Probert <probertm@nortelnetworks.com> writes:
>
>M> My mistake.  That should have been
>
>M>           hash_a.sort { |item|  # item is array [key, value]
>
>  I don't understand, sorry, but Hash#sort will use the block to sort the
>  hash and item is [[key0, value0], [key1, value1]]

(I have to stop sprouting when I am sick .. :-( )

What I -meant- to say was "hash_a.sort.each".  So,

$ cat hash_a.rb
#! /usr/local/bin/ruby
#
hash_a = Hash.new
hash_a["bob"] = 1
hash_a["al"]  = 2
hash_a["zac"] = 3
hash_a["moe"] = 4

puts "--- each"
hash_a.each { |key, val|
     puts "k=#{key} v=#{val}"
}

puts "--- sort"
hash_a.sort.each { |item|
     puts "k=#{item[0]} v=#{item[1]}"
}

$ ruby hash_a.rb
--- each
k=al v=2
k=moe v=4
k=zac v=3
k=bob v=1
--- sort
k=al v=2
k=bob v=1
k=moe v=4
k=zac v=3

--
My apologies for the wasted bandwidth.

-mark.