[ruby-core:18077] Re: Equality of recursive arrays

Hi,

At Sat, 2 Aug 2008 09:02:16 +0900,
Vladimir Sizikov wrote in [ruby-core:18076]:
> Essentially, the equality is not working right for recursive arrays,
> at least it seems that it doesn't work right for me:
> 
> Case #1:
> 
> a = []
> a << a
> b = []
> b << b
> 
> a == b #=> returns *false*
> 
> Is that expected or bug? The inspect values are the same.

It means ``no more comparison can continue,'' so a <=> b
returns nil.

> On the other hand, when we use #dup:
> 
> Case #2:
> 
> a = [1]
> a << a
> b = a.dup
> 
> a == b #=> returns *true*

a is [a], and b is also [a], so they're equal.

-- 
Nobu Nakada