From: David Garamond <davegaramond@...>
Date: 2002-07-21T01:07:18+09:00
Subject: valid hash keys

unlike perl, ruby treats 1 and '1' differently in hash keys:

$ irb
irb(main):001:0> a={}
irb(main):002:0> a[1]=1
irb(main):003:0> a['1']='1'
irb(main):004:0> a
{1=>1, "1"=>"1"}

so what are the range the valid values for hash keys? can i, like in 
python, use "immutable lists"/tuples as hash keys?

--
dave