From: Joel VanderWerf <vjoel@...>
Date: 2009-07-16T04:54:06+09:00
Subject: [ruby-core:24351] Re: is this expected?

Roger Pack wrote:
>> currently:
>>
>>>> {1 => 2} == {1 => 2.0}
>> => true
>>
>>>> {1 => 2} == {1.0 => 2}
>> => false
>>
>> This "mix floats and fixnums, sometimes it works, sometimes it
>> doesn't"  was somewhat surprising to me.
> 
> Since there was no response, I'll consider this a bug of some sort.
> The question is--should those 2 hashes be equal or not?

No. "Hash uses key.eql? to test keys for equality." -- ri Hash.

If it were true that {1 => 2} == {1.0 => 2}, then it would follow that

{1 => 2}[1] == {1.0 => 2}[1]

which is to say that

2 == nil

-- 
       vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407