From: Ragav Satish <ragavsatish@...>
Date: 2008-10-04T13:05:50+09:00
Subject: Re: content of an array gets cleared

Parv G. wrote:
> Hello,
> 
> Looking for you suggestions.
> 
> 1. array = %w(a b c d e)
> 2. tempArray = array
> 3. array.clear
> 4. puts tempArray.length
> 
> line 4 outputs: 0
> Why does my tempArray get cleared also?
> Any suggestions on how to keep the tempArray content from clearing out?
> 
> Thanks

because array and tempArray are references to the same Array instance.

# see same object
array.object_id     #=> -605829518
tempArray.object_id #=> -605829518

tempArray = array.dup #=> make a shallow copy.
array.clear
puts tempArray.length #=> 5
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