From: 7stud -- <bbxx789_05ss@...>
Date: 2008-05-14T03:49:15+09:00
Subject: Re: How to convert character to hexadecimal?

Sebastian Hungerecker wrote:
> 7stud -- wrote:
>> You can only interpret the meaning of an Integer in reference to some
>> base.  The return value of the hex method returns an Integer whose base
>> is 10.
> 
> How does an Integer whose base is 10 differ from an Integer whose base 
> is
> something else? Or how do you know what base an Integer has?
> Is 0xA a decimal number? No? So you'd probably say that 0xA is an 
> Integer in
> base 16 and 10 is an Integer in base 10, right? But 0xA and 10 are the 
> same
> object. 0xA.object_id == 10.object_id #=> true. How can that be if the 
> base
> is something inherent to the Integer (answer: it isn't).
> 
> 
>> An integer whose reference is base 10 is called a "decimal 
>> number".
> 
> Integers don't have a base. Only string representations of Integers do.


How ruby handles Integers has no bearing on whether a number is called a 
"decimal number" or an "octal number" or a "hex number".
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