Geoffrey Young writes:

> Adam Kennedy wrote:
> 
> > That is irrelevant. You put something into CPAN, get massive numbers
> > of people using it, and leave it alone and have it remain stable for
> > 4 years, it becomes an API whether you wanted it to be or not :)
> 
> really?

I'm with Adam on this one.

> so I use an age old (but undocumented) feature of Config, then Config
> changes and it's _not_ my fault?[1] 
> 
> [1] http://dev.perl.org/perl5/list-summaries/2005/20051003.html

But there Schwern invoked Tom Christian:

  You are wicked and wrong to have broken inside and peeked at the
  implementation and then relied upon it.
    -- tchrist in <[EMAIL PROTECTED]>

Note that's specifically to do with peeking inside.

If you don't peek inside some code but merely observe its output, and
its output always behaves in a particular way, then relying on that
output is not the same as relying on implementation details.

Smylers

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