From: sto.mar@...
Date: 2012-11-05T23:25:05+09:00
Subject: Re: Simple question

Am 05.11.2012 15:14, schrieb Carlo E. Prelz:
> 	Subject: Re: Simple question
> 	Date: Mon 05 Nov 12 10:52:15PM +0900
>
> Quoting August Y. (lists@ruby-forum.com):

>>      area=pi*($radus^2)

>> C:/Users/jyoung/objects.rb:20:in `*': true can't be coerced into Float

>> pi is defigned and $radus is to.f so what am i missing

> ^ is the exclusive-or operator. It returns a boolean value. Which
> cannot be multiplied by a float.

depends on $radus, which is probably nil.

For an Integer int^2 would return an Integer,
and for a Float there would be a NoMethodError.

But: nil^2 => true


-- 
<https://github.com/stomar/>