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Brothers smack me down if i'm wrong, but recently i used something similar to this code to do what you're describing:
#!/usr/bin/perl -w use strict; package foo; { my $self = { foo => bar }; sub new { return bless $self, shift; } sub get_obj { return UNIVERSAL::isa($self, 'foo') # or not as cool: #return ref($self) eq 'foo' ? $self : goto &new; } }
This not only makes new instances when you want them, it also can pass on old instances to any class that requires it and uses the 'get_obj' method.

Whether this is Good Coding(tm) or not, i can't say, but it's worked for me (and i might change what i have, depending on how monks respond to this :)


Update: Added the UNIVERSAL::isa call and commented out the ref($self) call due to podmaster's suggestion. Could someone please elaborate on why UNIVERSAL::isa is better?

Update2: Whoops. Put the args for UNIVERSAL::isa in wrong order. Hmm, i tested it before i posted and it seemed to work fine the other way as well. Tested again and apparently i was smoking crack. Mental note: RTFM first next time! ;-)

In reply to Re: single instance shared with module by jynx
in thread single instance shared with module by Jaap

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