如何在 Scala 中从导入中排除/重命名某些类？
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How do I exclude/rename some classes from import in Scala?
提问by Alexey Romanov
Language FAQsays
import scala.collection.mutable.{_, Map => _, Set => _}
should import all classes from package scala.collection.mutable, except Mapand Set. But it gives me this error:
应该从包导入所有类scala.collection.mutable，除了Map和Set。但它给了我这个错误：
error: '}' expected but ',' found.
import scala.collection.mutable.{_, Map => _, Set => _}
Is there still a way to do this?
还有办法做到这一点吗？
回答by Patrick
The _has to be put at the end - not at the beginning:
该 _端部有被投入-而不是开头：
Exclude Map and Set from the import
从导入中排除 Map 和 Set
import scala.collection.mutable.{Map => _, Set => _, _}
Exclude Set and rename Map to ScalaMutableMap
排除 Set 并将 Map 重命名为 ScalaMutableMap
import scala.collection.mutable.{Map=>ScalaMutableMap, Set => _, _}
See the detailed info in Scala Refererence, page 50, paragraph 4.7
请参阅Scala Reference 中的详细信息，第 50 页，第 4.7 段
