| Field | Xcode 4.3 | Xcode 4.3.1 | Diff |
|---|---|---|---|
| Release type | stable | stable | same |
| Edition | - | - | same |
| Release date | 2012-02-12 | 2012-03-05 | different |
| Minimum macOS | 10.7 | 10.7 | same |
| Swift | unknown | unknown | same |
| iOS SDK | unknown | unknown | same |
| Build | 4E109 | 4E1019 | different |
建议：如果你是生产环境主力开发，优先选择 stable 版本；如需验证新 SDK，再考虑 beta。