You both appear to have overlooked the very simple alternative: 

my $p= 'Getopt::Long::Framework';

$p->What();
$p->Ever();

[download]

But I don't buy the 'singleton' concept in general. Even CGI.pm realizes that sometimes There Can Be More Than One, even for things where that is almost never wanted and it is easy to fail to see any cases when someone would want Two.

Implement your functionality using plain (non-singleton) objects and just provide a handy shortcut for getting the default, global instance. Then you have the benefits of 'singleton' without the limitations.

- tye        

In reply to Re^2: Design of a global-variable storage package (string) by tye
in thread Design of a global-variable storage package by Tanktalus

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