[Chicago-talk] Creating dynamic, callable subroutines
me at heyjay.com
Sun Aug 3 19:15:42 PDT 2008
Thanks Steve. I already got it working like in the example.
On Sun, Aug 3, 2008 at 6:50 PM, Steven Lembark <lembark at wrkhors.com> wrote:
>> How can I create the actual subroutines dynamically, so that they can
>> be called from the outside using the normal:
> Don't bother: if the only thing you are doing is calling
> the other subs then just import them into your local
> calling space:
> use Symbol qw( qualify_to_ref );
> # list of things you want in your local space
> # by package and source sub; you can also supply
> # an optional local name instead of importing the
> # name as-is.
> my %importz =
> 'Foo::com::ib::client' =>
> Order => '',
> TickType => ''
> # if they called this something else
> # in the last rev you can rename the
> # local version.
> ScannerSubscription => 'ScanSub',
> # do the deed:
> # walk down the packages, finding lists of subs to import.
> # for each import, make a ref in this package with the
> # dest name ( $src || $dst ), then assign it a coderef
> # from the source package.
> sub import_subs
> while( my ( $package, $subz ) = each %importz )
> while( my ( $src, $dst ) = each %$subz )
> my $ref = qualify_to_ref ( $dst || $src ), __PACKAGE__;
> *$ref = $package->can( $src )
> or die "Oops: $package lacks '$src' to export!";
> # viola! at this point calling Order in the local
> # package will dispatch into the other package's
> # 'Order' call.
> Steven Lembark 85-09 90th St.
> Workhorse Computing Woodhaven, NY, 11421
> lembark at wrkhors.com +1 888 359 3508
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