From: Siep Korteling <s.korteling@...>
Date: 2009-02-28T22:08:03+09:00
Subject: Re: Doubt in -- Ruby --> Array --> array.display  -- method

jazzez ravi wrote:
> Hi All,
> 
> I created few (array's method related) questions in ruby. But I am not
> clear about one question. Here is the question ..
> 
> 
> Question 7
> (from
> http://raveendran.wordpress.com/2009/02/18/ruby-array-related-excercise/)
> 
> @a=[34,45,56,2,13,54]
> 
> @b= @a[2].display.to_i + @a[3].display.to_i
> 
> puts @b gives,
> 
> a) Error b) 58 c) 5620 d) 562
> 
> This is the question. In my view,
(...)
> 
> MY Solution 2:
> 
> 56.display -> displays 56 -> Here .to_i will not work
> 
> So my answers is,
> 
> @b= 562
> 
> 
> But the result came as 5620   . how it works ?
> 
> Thanks,
> P.Raveendran

56.display -> prints 56 and returns nil.
nil.to_i returns 0
So @b equals zero

hth,

Siep
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