From: Tobias Reif <tobiasreif@...>
Date: 2001-11-22T03:45:52+09:00
Subject: [ruby-talk:26057] Re: call_myself

Michael Neumann wrote:


>>Sometimes, this is not obvious, because there might me a lot of other code.
>>
>>def some_method arg
>>   # many LOC
>>   # some_method mod_arg
>>end
>>
>>Is there something that makes it clear that the method calls itself?
> 
> But do we really need this? I've never had problems with unwanted
> recursions.


me neither. It's not about unwanted recursions: it's about making it 
clearer what happens in the code, to make it more accessible, and easier 
to understand.

If in a method def, after *many* LOC, there is a call to the method 
itself, it is not obvious that it's a call to itself.


---
def fact(n)
   if n == 0
     1
   else
     n * call_myself(n-1)
   end
end
---
call_myself would make that clear. It doesn't offer any added 
functionality; it could be implemented to make the language easier to 
understand.

Can it be implemented in a few lines of Ruby code?

Tobi



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Tobias Reif
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