From: Matt Mongeau <lists@...>
Date: 2013-02-21T07:40:30+09:00
Subject: Re: THE CLASS/OBJECT CHICKEN-AND-EGG PARADOX

Joel Pearson wrote in post #1098100:
> Matt Mongeau wrote in post #1098076:
>> It's not really a paradox. Take for example
>> irb(main):001:0> a = []
>> => []
>> irb(main):002:0> a << a
>> => [[...]]
>
> irb(main):003:0> a.flatten!
> ArgumentError: tried to flatten recursive array
>         from (irb):3:in `flatten!'
>         from (irb):3
>         from C:/Ruby193/bin/irb:12:in `<main>'
>
> Ha! I bet whoever wrote that ( Matz, presumably? ) was shaking his head
> and thinking "Well this is one error message no sane programmer will
> ever see." I'd never have seen that as a possibility.

For more object reference shenanigans please enjoy

irb(main):005:0> h = {}
=> {}
irb(main):006:0> h[h] = h
=> {{...}=>{...}}
irb(main):007:0> h.to_a
=> [[{{...}=>{...}}, {{...}=>{...}}]]

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