On Dec 28, 2005, at 7:05 PM, Manfred Bergmann wrote:
I want to use some Foundation objects like NSDictionary and others
in a Perl script (because of writing a plist of that).
I succeeded with using PerlObjCBridge (use Foundation).
Is this possible with CamelBones, too? Sherm?
Yes, it is. When you install CamelBones, it installs a "embedded"
framework and Perl module in /Developer/CamelBones; that's the one
that gets copied into .app bundles for GUI apps. It also installs a
"shared" framework in /Library/Frameworks, and a Perl module that
uses that framework under /Library/Perl, so you can use those from
standalone .pl scripts.
Because a .pl file isn't a bundle, you can't package it up with an
embedded copy of the framework. If other people want to use your
script, they'll need to install the CamelBones package.
CamelBones and PerlObjCBridge are very similar, but there are some
differences.
CamelBones supports subclassing of Cocoa classes.
Cocoa exceptions in CamelBones are caught with an eval {} block.
PerlObjCBridge handles exceptions with a callback function.
CamelBones has support for toll-free bridging. If you call a method
in scalar context that returns an NSDictionary or NSArray, you get an
object returned. But, if you call it in list context, you get a tied
hash or array instead. So you can use "for (keys %foo)" instead of
NSEnumerator to access the elements of an NSDictionary, for instance.
The toll-free bridging works the other way too - you can pass an
array or hash ref wherever an NSArray or NSDictionary is expected.
NSPoint, NSRange, NSRect, and NSSize structs can also be passed as
array or hash refs.
With CamelBones, the trailing underscore when you call Cocoa methods
that take one or more arguments is optional. So you could write
either $object->doFoo_($bar) or $object->doFoo($bar). PerlObjCBridge
requires the trailing underscore.
Of course, there's this:
use CamelBones qw(:All); # Or qw(:Foundation) if you don't want
AppKit imports
vs. this:
use PerlObjCBridge;
sherm--
Cocoa programming in Perl: http://camelbones.sourceforge.net
Hire me! My resume: http://www.dot-app.org
