RubyCocoa introduction presented by Chris Chan (iGPSD) organized Cocoahead HK

presented by Chris Chan (iGPSD)

organized Cocoahead HK

Ruby is ... developed by Yukihiro “Matz” Matsumoto in the early 90’s a object oriented scripting language everything is an object ( example: 1.even? ) dynamic type script language the foundation of well known web development framework ( Ruby on Rails )

developed by Yukihiro “Matz” Matsumoto in the early 90’s

a object oriented scripting language

everything is an object ( example: 1.even? )

dynamic type script language

the foundation of well known web development framework ( Ruby on Rails )

Objective-C ... an object-oriented extension of C a dynamically-typed language use message handler rather than function call add support of C++ and become Objective-C++ Objective-C++ supported by official GCC since gcc 4.1

an object-oriented extension of C

a dynamically-typed language

use message handler rather than function call

add support of C++ and become Objective-C++

Objective-C++ supported by official GCC since gcc 4.1

Cocoa is ... a framework for building desktop applications developed by NeXT in 1990’s Apple adopt NeXT technology and built OSX

a framework for building desktop applications

developed by NeXT in 1990’s

Apple adopt NeXT technology and built OSX

RubyCocoa is ... a bridge between the Objective-C and Ruby programming language import the Objective-C classes on demand work by forwarding Messages by using proxy objects able to do the method overriding to Objective-C method

a bridge between the Objective-C and Ruby programming language

import the Objective-C classes on demand

work by forwarding Messages by using proxy objects

able to do the method overriding to Objective-C method

History for RubyCocoa started in 2001 by Hisakuni Fujimoto in 2002, registered on SourceForge in 2006, joined by developer from Apple, RubyCocoa presentation made during WWDC in 2007, included and supported in Mac OSX Leopard information from wikipedia http://en.wikipedia.org/wiki/RubyCocoa

started in 2001 by Hisakuni Fujimoto

in 2002, registered on SourceForge

in 2006, joined by developer from Apple, RubyCocoa presentation made during WWDC

in 2007, included and supported in Mac OSX Leopard

RubyCocoa Usage Ruby Script that make use of the native Cocoa API ( like make use of image preview to convert image ) Interactive to the system directly use as a tool for prototyping as you can use irb to study the Cocoa in runtime

Ruby Script that make use of the native Cocoa API ( like make use of image preview to convert image )

Interactive to the system directly

use as a tool for prototyping as you can use irb to study the Cocoa in runtime

RubyCocoa weakness Performance is not as good as Objective-C/Cocoa Application Ruby isn’t thread-safe, developer may need to handle concurrent update by using locks Ruby cannot dispatch native threads

Performance is not as good as Objective-C/Cocoa Application

Ruby isn’t thread-safe, developer may need to handle concurrent update by using locks

Ruby cannot dispatch native threads

How to get start For developer using Mac OSX Leopard, you have built-in support for the RubyCocoa For developer using Tiger or earlier, you can download and install RubyCocoa svn co https://rubycocoa.svn.sourceforge.net/svnroot/rubycocoa/trunk rubycocoa ruby install.rb config ruby install.rb setup sudo ruby install.rb install

For developer using Mac OSX Leopard, you have built-in support for the RubyCocoa

For developer using Tiger or earlier, you can download and install RubyCocoa

svn co https://rubycocoa.svn.sourceforge.net/svnroot/rubycocoa/trunk rubycocoa

ruby install.rb config ruby install.rb setup sudo ruby install.rb install

Syntax different between Objective-C and Ruby(I) in Objective-C, sending a message named play to an object named sound [sound play]; in Ruby, the corresponding message sound.play

in Objective-C, sending a message named play to an object named sound [sound play];

in Ruby, the corresponding message sound.play

Syntax different between Objective-C and Ruby(II) in Objective-C, messages include arguments, the arguments are interleaved with tags that describe them [sound initWithContentsOfFile:filename byReference:false]; in Ruby, the corresponding message sound.initWithContentsOfFile(filename, :byReference, false) * argument tags are included as parameters of the message, in this case is “ byReference”

in Objective-C, messages include arguments, the arguments are interleaved with tags that describe them [sound initWithContentsOfFile:filename byReference:false];

in Ruby, the corresponding message sound.initWithContentsOfFile(filename, :byReference, false) * argument tags are included as parameters of the message, in this case is “ byReference”

Ruby irb By using irb, you can try using rubycocoa irb(main):001:0> require 'osx/cocoa' => true irb(main):002:0> s = OSX::NSString.stringWithString &quot;hello&quot; => #<OSX::OCObject:0x370976 class='NSCFString' id=0x114dee0> irb(main):003:0> s.objc_methods.sort => [&quot;CI_affineTransform&quot;, &quot;CI_copyWithZone:map:&quot;, &quot;CI_rect&quot;, &quot;UTF8String&quot;, ... http://www.rubycocoa.com/an-introduction-to-rubycocoa/4

By using irb, you can try using rubycocoa

irb(main):001:0> require 'osx/cocoa' => true irb(main):002:0> s = OSX::NSString.stringWithString &quot;hello&quot; => #<OSX::OCObject:0x370976 class='NSCFString' id=0x114dee0> irb(main):003:0> s.objc_methods.sort => [&quot;CI_affineTransform&quot;, &quot;CI_copyWithZone:map:&quot;, &quot;CI_rect&quot;, &quot;UTF8String&quot;, ... http://www.rubycocoa.com/an-introduction-to-rubycocoa/4

Example Code Example code provided by Apple can found in here /Developer/Examples/Ruby/RubyCocoa/

Example code provided by Apple can found in here /Developer/Examples/Ruby/RubyCocoa/

ActiveRecord Binding Example /Developer/Examples/Ruby/RubyCocoa/MailDemo/MailDemoActiveRecordBindings/

RealTime Image filter Demo /Developer/Examples/Ruby/RubyCocoa/CITransitionSelectorSample

/Developer/Examples/Ruby/RubyCocoa/CITransitionSelectorSample

You can build the next Clip it! /Developer/Examples/Ruby/RubyCocoa/MiniBrowser

/Developer/Examples/Ruby/RubyCocoa/MiniBrowser

More resource http://www.rubycocoa.com They have many great tutorial for beginner like me http://rubycocoa.sourceforge.net/HomePage The latest Source for RubyCocoa

http://www.rubycocoa.com They have many great tutorial for beginner like me

http://rubycocoa.sourceforge.net/HomePage The latest Source for RubyCocoa

Books Cocoa(R) Programming for Mac(R) OS X (3rd Edition) http://www.amazon.com/exec/obidos/ASIN/0321503619/bignerdranch-20 Ruby Cocoa ( beta book ) expected release date Nov 2008 http://www.pragprog.com/titles/bmrc/rubycocoa

Cocoa(R) Programming for Mac(R) OS X (3rd Edition) http://www.amazon.com/exec/obidos/ASIN/0321503619/bignerdranch-20

Ruby Cocoa ( beta book ) expected release date Nov 2008 http://www.pragprog.com/titles/bmrc/rubycocoa

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