宇宙人 questions

• Equality of functions in Scala, is functions objects in Scala?
• algorithm: is there a map-reduce way to merge a group of sets by deleting all the subsets
• Use maven-flatten-plugin and maven-shade-plugin at the same time
• scala overloaded method value cannot be applied
• How to clean up other resources when spark gets stopped
• find path cross matrix with max sum forward then backward
• How to refresh a table and do it concurrently?

宇宙人 answers