Hi,

In message "Re: [ruby-core:23423] Re: [Bug #1363] Wrong value for Hash of NaN"
    on Mon, 11 May 2009 19:03:59 +0900, Nobuyoshi Nakada <nobu / ruby-lang.org> writes:

|At Wed, 8 Apr 2009 14:38:31 +0900,
|Heesob Park wrote in [ruby-core:23154]:
|> Ruby cannot handle NaN as a unique key of Hash.
|
|It's easy to make them unique as key, I'm not sure which is
|"correct" behavior though.

Two NaN values are not equal with each other by definition, in that
sense, even though some might want to use NaN as a hash key, the
current behavior seems to be "correct".

							matz.