From: Robert Klemme <bob.news@...>
Date: 2003-03-17T21:42:01+09:00
Subject: Re: dynamically create a method


"Rudolf Polzer" <abuse@durchnull.de> schrieb im Newsbeitrag
news:slrnb7b7ev.as5.abuse@durchnull.de...
> Scripsit ille �Robert Klemme� <bob.news@gmx.net>:
> > isn't this easier?
> >
> > class Fixnum
> >   def power(exp)
> >     self ** exp
> >   end
> > end
> >
> > a=10
> > a.power 2
>
> It is, but there might be cases where one does not know the name of the
> method in advance.

This wasn't obvious from the original poster's example.  But I agree, for
those cases one of the eval approaches has to be used.

> Perhaps when dynamically creating more than one method
> in method_missing().

Hm, I could not imagine a scenario where method_missing is used to
actually create methods.  Typically I'd create them before they are
missed.  Can you provide an example?

> And... wasn't there a way to convert a string to a symbol?

Yes:

irb(main):006:0> "foo".intern.type
Symbol
irb(main):007:0>

Ciao

    robert