swift语言版本选择 - 解决XCode报错：The “Swift Language Version” (SWIFT_VERSION) build setting must be set to a supported valu

转发链接：https://blog.csdn.net/nathan1987_/article/details/79757368

The “Swift Language Version” (SWIFT_VERSION) build setting
must be set to a supported value for targets which use Swift.

This setting can be set in the build settings editor.