Recent questions tagged scala

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scala - flatMap with Shapeless yield FlatMapper not found

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scala - Parametric type + function requires a string as second parameter?

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scala - How to hide scrollbars in the JavaFX WebView

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scala - Spark join produces wrong results

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scala reflection

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scala - Error when trying to write to hdfs: Server IPC version 9 cannot communicate with client version 4

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scala - Add additional directory to clean task in SBT build

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scala - Why can't i define a variable recursively in a code block?

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scala - Spark DataFrame equivalent to Pandas Dataframe `.iloc()` method?

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 677 views

scala - Difference in flattening an Option[List[Int]] in 2.9.1 and 2.10 nightly

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 1.2k views

scala - sbt-assembly : including test classes

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scala - How to concatenate two streams in Apache Flink

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scala - Non-integer ids in Spark MLlib ALS

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scala - How to create encoder for Option type constructor, e.g. Option[Int]?

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scala - Why can I not flatMap a List[Option] using underscore?

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scala - Spark Dataset aggregation similar to RDD aggregate(zero)(accum, combiner)

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scala - Cross-compiling aggregate projects with different crossScalaVersions for subprojects

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 739 views

scala - NullPointerException in Spark RDD map when submitted as a spark job

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 796 views

scala - Predict Class Probabilities in Spark RandomForestClassifier

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 841 views

scala - How to convert List[Double] to Columns?

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 737 views

scala - Load Spark data locally Incomplete HDFS URI

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 941 views

scala - Gatling - execute scenarios sequentialy

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 1.0k views

scala - Play tests with database: "Too many connections"

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 851 views

scala - Can I overload curried methods?

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 1.2k views

scala - Read specific column from Parquet without using Spark

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 875 views

scala - Using dynamic Datasource with Tomcat

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 699 views

scala - What does Dotty offer to replace type projections?

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 897 views

scala - Unresolved Dependencies when building play 2.0 project

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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