use symbol table, luke! print map { $_, $/ } grep { substr($_, -2) eq '::' } keys %::; this gives you all the entries in the main symbol table ending with '::'. this equates to all the loaded top level modules, along with some other perl internal namespaces.

come to think of it, you can just do the following: exists $::{'DBI::'} to check if HTTP::Request is loaded, do the following: exists $::{'HTTP::'} && exists $HTTP::{'Request::'} i think you can do this too: 

$DBI_loaded = defined %DBI::;

# or

$HTTP_Request_Loaded = defined %HTTP::Request::;

[download]
so, to conclude here is code that loads DBI unless DBI is already loaded (or someone else has a package called DBI, or someone is screwing with the symbol table, or someone is blindly creating variables in the main namespace from CGI variables, etc. don't anyone say i didn't warn them.) unless (defined %DBI::) { use DBI; }

In reply to Re: Detecting modules in use? by mdillon
in thread Detecting modules in use? by BBQ

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