From: Li Chen <chen_li3@...>
Date: 2009-02-11T10:46:05+09:00
Subject: Re: how to do the recursion

William James wrote:

> def dec_to_binary num, result = []
>   result <<
>     if num.odd?
>       1
>     else
>       0
>     end
>   if num < 2
>     result.reverse.join ""
>   else
>     dec_to_binary num/2, result
>   end
> end
> 
> 
> p dec_to_binary 254


Hi Will,

I have one more question about the method call:

When you define method dec_to_binary, you pass two parameters.
But when you call the method, you only provide one parameter.

Surprisingly Ruby doesn't complain it. How to explain this seemly 
inconsistancy?

Thanks,

Li


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