Xcode 4.5

[willmouse]

http://itunes.apple.com/cn/app/xcode/id497799835?mt=12

• SDKs for OS X 10.8 Mountain Lion and iOS 6.
• Auto Layout now supported on both OS X and iOS.
• New localization workflow can share a single base .xib or .storyboard file for multiple locales.
• OpenGL debugger for iOS analyzes performance and suggests improvements.
• Debugger watchpoints can be set when running on a connected iOS device.
• Objective-C @synthesize command is generated by default when using properties.
• Objective-C adds literal syntax for numbers, arrays, dictionaries, and expressions.
• Xcode 4.5 runs on both OS X Lion and OS X Mountain Lion.
• Enhanced for the MacBook Pro with Retina display.
• Additional bug fixes and stability improvements.

[fmfsaisai]

more about objective-c literals:
http://clang.llvm.org/docs/ObjectiveCLiterals.html

[PrideChung]

memory leak的问题有好点么。

[willmouse]

@fmfsaisai 我记得这个literal synatx是Objc 2.0加的吧，和Xcode 4.5这次更新貌似没太大关系？

[acen]

用了gm版以后经常出现无法与连接的设备通信，内存也经常泄漏。不知道正式版改了么

[ybian]

@acen 正式版跟GM是一个版本

[fmfsaisai]

@willmouse

• Objective-C adds literal syntax for numbers, arrays, dictionaries, and expressions.

[fmfsaisai]

@willmouse
what does literal syntax do:

http://adcdownload.apple.com//wwdc_2012/wwdc_2012_session_pdfs/session_405__modern_objectivec.pdf

严格说这其实不是一个Objective-C的特性，而是一个编译器的特性，最终还是会转化成之前的Objective-C的语法的。

[fmfsaisai]

4.4的时候支持部分的literal语法的，但是不支持Object Subscripting，比如:

dict[@"key"] = @12.5;

4.5的时候就彻底支持了。

[willmouse]

@fmfsaisai 了解，3Q

[fly2never]

@fmfsaisai 4.4只支持osx的Object Subscripting,不支持iOS
4.5都支持了