| Field | Xcode 10.1 GM | Xcode 10.2 Beta 1 | Diff |
|---|---|---|---|
| Release type | GM | Beta 1 | different |
| Edition | - | - | same |
| Release date | 2018-10-30 | 2019-01-24 | different |
| Minimum macOS | 10.13.6 | 10.14 | different |
| Swift | 4.2.1 | 5.0 | different |
| iOS SDK | 12.1 | 12.2 | different |
| Build | 10B61 | 10P82s | 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。