> Hi, I saw this neat trick while looking at AppConfig.pm on CPAN. It lets > you define configuration variables in a file and, having read them, access > them either by name-as-string OR as a function having the name of the > variable, like so (copied from the CPAN documentation): > > # create/define combined > my $config = AppConfig->new(\%cfg, > $varname => \%varopts, $varname => \%varopts, ...); > > # set/get the value > $config->set($varname, $value); > $config->get($varname); > > # shortcut form > $config->varname($value); > $config->varname(); > > It's that last part labeled "shortcut form" that I'm interested in. > > I've read through the module's code once and didn't catch the part where > they auto-define the var-named functions for you. What should I be looking > for, and/or how would one implement this? > > Obviously I could just write subroutines having the same names as > configuration variables, but it's the "automagically appears" aspect that > looks especially useful. > > TIA. > >
I believe this is handled with Autoloading. Check out the Autoloading section of perldoc perlsub for more. In particular check out the AUTOLOAD method of the AppConfig::State module source: http://search.cpan.org/src/ABW/AppConfig-1.56/lib/AppConfig/State.pm The comments before it discuss it a little. http://danconia.org -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] <http://learn.perl.org/> <http://learn.perl.org/first-response>
