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On 7/14/06, ara.t.howard / noaa.gov <ara.t.howard / noaa.gov> wrote:
>
> On Fri, 14 Jul 2006, Sean O'Halpin wrote:
>
> > Hmmm. I'm still getting "singleton method called for a different
> > object (TypeError)" for this (ruby 1.8.4 (2005-12-24) [i386-mswin32]).
>
> [SNIP]
> you robert?



Me too, what was I executing???
Sorry,

btw.  this challenge was not arbitrary:  the increase in metaprogramming
> popularity means people are doing things like
>
>    def class_method
>      alias '__instance_method__', 'instance_method' # push
>
>      define_method 'instance_method' do
>        # ...
>        __instance_method__ 42
>        # ...
>      end
>
>    ensure
>      alias 'instance_method', '__instance_method__' # pop
>    end
>
> but this is neither thread safe (easy to fix) or re-entrant (not easy to
> fix).
> what i mean is doing
>
>    class_method{
>      class_method{
>      }
>    }
>
> blows up.
>
> to avoid this i wanted to develop this pattern
>
>    def class_method
>      __instance_method__  ethod 'instance_method' # push
>
>      define_method 'instance_method' do
>        # ...
>        __instance_method__.call 42
>        # ...
>      end
>
>    ensure
>      define_method 'instance_method', __instance_method__ # pop
>    end
>
> but, of course, we are seeing that it doesn't work.
>
> regards.
>
> -a
> --
> suffering increases your inner strength.  also, the wishing for suffering
> makes the suffering disappear.
> - h.h. the 14th dali lama
>
>

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