Xcode报错：
<unknown>:0: error: filename "Records+CoreDataProperties.swift" used twice: '/Users/UserName/Documents/ProjectName/Records+CoreDataProperties.swift' and '/Users/UserName/Library/Developer/Xcode/DerivedData/ProjectName-ewybzckfwcaoafaiybvcjrlyfsou/Build/Intermediates/ProjectName.build/Debug-iphoneos/ProjectName.build/DerivedSources/CoreDataGenerated/UserRecords/Records+CoreDataProperties.swift'
解决方法
尝试了删除DerivedScourceswe文件夹里面的缓存文件也没用。
最后在stackoverflow上找到了答案
1.把Codegen改成Manual/None
关键一步
2.删除缓存文件
复制报错的地方提示的重复的文件的地方，Finder 前往这个地址
/Users/UserName/Library/Developer/Xcode/DerivedData/ProjectName-ewybzckfwcaoafaiybvcjrlyfsou/Build/Intermediates/ProjectName.build/Debug-iphoneos/ProjectName.build/DerivedSources
这里面的都是项目的缓存，我把当前项目删了
