G'day Lotus1,

You could follow the convention used by Data::Dumper. It has a couple of screenfuls of "Configuration Variables": 

$Data::Dumper::Indent
$Data::Dumper::Trailingcomma
$Data::Dumper::Purity
... lots more ...
$Data::Dumper::Sortkeys 
$Data::Dumper::Deparse
$Data::Dumper::Sparseseen

[download]

So that would suggest: $Data::GUID::Any::Uppercase.

That, however, is counter-intuitive. If the purpose is to choose lowercase, $Data::GUID::Any::Lowercase would, in my opinion, make a lot more sense. Default would be FALSE; set it to TRUE if you want lowercase.

I see you've already received conflicting advice; you may get more. There's really no convention for this; for instance, I've frequently seen $DEBUG. Perhaps the best advice is to make your own choice then use it consistently across your modules. Just to expand on the Data::Dumper example, I know I'd find it very annoying if I had to continually check the documentation to see whether I needed useQQ or useQq or UseQq or ... you get the picture: they all have the same format; in this case, Useqq.

— Ken

In reply to Re: when to capitalize package variables by kcott
in thread when to capitalize package variables by Lotus1

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