on 3/11/02 3:05 AM, [EMAIL PROTECTED] purportedly said: > if i have a bunch of require's happening and all those > required files happen to use some of the same named subs. > how do i make sure my program uses exactly the one i want? > > in mod_perl it seemd straightforward but what do i do in a > normal perl-program? > > mod_perl: > my $dbh = Apache::somewhere::db::connection::connection_postgres::get_sub();
There is no way, automatically, using "require". Some alternatives, in order of complexity: 1) Make sure to use "package" in your required files to declare their own namespace (most Perl modules do), and then only invoke functions using their full qualified name, e.g. Package::subroutine(). This is apparently what you are doing with mod_perl. 2) Use "use" instead and follow export semantics so only the functions specifically asked for are imported into the main namespace. Just about any Perl book that covers modules will tell you how to do this, and it is fairly simple. 3) Use object orientation instead. All namespaces are kept separate, so you get the benefits of both #1 and #2, although much easier to manage and debug than #1, as well as many other benefits to OOP implementation. Keary Suska Esoteritech, Inc. "Leveraging Open Source for a better Internet"
