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这是一个创建于 4992 天前的主题，其中的信息可能已经有所发展或是发生改变。
https://developer.apple.com/library/ios/#documentation/DeveloperTools/Conceptual/WhatsNewXcode/00-Introduction/Introduction.html
Highlights Found in Xcode 4.3
Xcode 4.3 supports development for iOS SDK 5.0.
The Xcode 4.3 installation includes Mac OS X SDKs for 10.6 Snow Leopard and 10.7 Lion.
The Xcode toolset is repackaged as a single application for a better Mac App Store experience.
Complementary tools, such as Instruments and FileMerge, launch from within Xcode.
The ARC Migrator can convert Mac apps that use garbage collection or retain release.
Xcode 4.3 offers additional bug fixes, stability and performance improvements.
These highlights are described in “New Features in Xcode 4.3”
Highlights Found in Xcode 4.3
Xcode 4.3 supports development for iOS SDK 5.0.
The Xcode 4.3 installation includes Mac OS X SDKs for 10.6 Snow Leopard and 10.7 Lion.
The Xcode toolset is repackaged as a single application for a better Mac App Store experience.
Complementary tools, such as Instruments and FileMerge, launch from within Xcode.
The ARC Migrator can convert Mac apps that use garbage collection or retain release.
Xcode 4.3 offers additional bug fixes, stability and performance improvements.
These highlights are described in “New Features in Xcode 4.3”
 | 1 xilihwala OP 已装完,平滑升级很爽,目前感觉改进最明显是Documentation 的 Search 不卡了,很爽 |
 | 2 yyfearth 2012-02-17 04:24:15 +08:00 这次安装，和过去区别很大，不是下载一个installer，而是xcode.app本身，而且根目录下不会有Developer文件夹。只不过，很多原来带的组件，比如iOS Simulator，现在要额外下载了。 |
 | 4 myrual 2012-02-17 09:06:52 +08:00 上个星期下载过4.2，这次有必要升级么？下载好慢好慢 |
 | 5 liuhang0077 2012-02-17 10:11:12 +08:00 @myrual 没必要。。 |
 | 6 acwind 2012-02-17 10:13:51 +08:00 Mac App Store 居然没提示要升级，只有直接下了 …… |
 | 8 horace 2012-02-17 10:17:05 +08:00 大家小心安装4.3这个版本，安装之前一定不要直接删除4.2，要先看完readme，我之前装4.3 preview 3出现各种问题。 |
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