12 2018 档案

scala 2.11.x/spec/03-types.md

摘要："scala/spec/03 types.md" title: Types layout: default chapter: 3 Types We distinguish between first order types and type constructors, which take type 阅读全文

posted @ 2018-12-18 20:47 澄轶阅读(194) 评论(0) 推荐(0) 编辑

scala Weak Conformance

摘要：Weak Conformance In some situations Scala uses a more general conformance relation. A type S weakly conforms to a type T, written S 阅读全文

posted @ 2018-12-18 20:43 澄轶阅读(180) 评论(0) 推荐(0) 编辑

conda 查看已有环境

摘要：``` conda info -e # conda environments: # dlcv /Users/enzhao/suanec/libs/anaconda2/envs/dlcv py36 /Users/enzhao/suanec/libs/anaconda2/envs/py36 root ... 阅读全文

posted @ 2018-12-17 17:34 澄轶阅读(90424) 评论(0) 推荐(2) 编辑

Spark 异步Action

摘要：异步不保序，但大作业执行时间后移。 .set("spark.scheduler.mode", "FAIR") 公平调度，充分使用集群资源。 "Spark Doc" def collectAsync(): FutureAction[Seq[T]] Returns a future for retrie 阅读全文

posted @ 2018-12-08 17:14 澄轶阅读(1275) 评论(0) 推荐(0) 编辑

maven <include>与<exclude>划定的范围存在冲突，则以<exclude>配置为准。

摘要：maven 与划定的范围存在冲突，则以配置为准。阅读全文

posted @ 2018-12-06 15:19 澄轶阅读(1192) 评论(0) 推荐(0) 编辑