If my Perl contains ${DBI::errstr} I get warnings like this:
Ambiguous use of ${DBI::errstr} resolved to $DBI::errstr at (eval 20) line 284.
If my Perl contains $DBI::errstr (without the braces) I don't get these
warnings. Is there an explanation for this?
When I use things like ${File::Find::name} I do not get these kinds of
warnings; I would like to understand the difference.
It's possible the difference is the environment the process is running in - my
DBI code gets wrapped with a bunch of vendor code before execution, but my
Find code does not.
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