Recent questions tagged scala

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

scala - How to implement the SKI combinator calculus with match types?

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711 views 1 answer

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

scala - How to access objects within an object by mixing in a trait with reflection?

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852 views 1 answer

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

scala - In Spark Streaming, is there a way to detect when a batch has finished?

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748 views 1 answer

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

scala - How to compare every element in the RDD with every other element in the RDD ?

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837 views 1 answer

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

scala - Is it possible to use json4s 3.2.11 with Spark 1.3.0?

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1.0k views 1 answer

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

scala - What is the preferred way to avoid SQL injections in Spark-SQL (on Hive)

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696 views 1 answer

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

scala - How to compute the inverse of a RowMatrix in Apache Spark?

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787 views 1 answer

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

scala - How to handle multi line rows in spark?

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749 views 1 answer

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

scala - By-name repeated parameters

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772 views 1 answer

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

scala - "can't existentially abstract over parameterized type..."

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664 views 1 answer

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

scala - Explicit return from play action

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827 views 1 answer

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

scala - Iterating over an array in JSON with Play 2.1.1

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597 views 1 answer

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

scala - SBT dependsOn usage - migration from 0.12 to 0.13

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778 views 1 answer

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

scala - Type safe method chaining that doesn't allow repeats of operations

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657 views 1 answer

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

scala - Class type required but T found

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1.7k views 1 answer

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

scala - Difference between org.apache.spark.ml.classification and org.apache.spark.mllib.classification

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703 views 1 answer

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

scala - Hash function in spark

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783 views 1 answer

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

scala - How to unwind array in DataFrame (from JSON)?

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744 views 1 answer

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

scala - Spark ML - Save OneVsRestModel

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690 views 1 answer

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

scala - How get application version in play framework and build.sbt

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931 views 1 answer

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

scala - Execute external command

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654 views 1 answer

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

scala - Why is a `val` inside an `object` not automatically final?

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882 views 1 answer

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

scala - Standalone deployment of Scalatra servlet

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574 views 1 answer

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

scala - Why use curly braces over parentheses?

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1.0k views 1 answer

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

scala - What's the performance impact of converting between `DataFrame`, `RDD` and back?

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656 views 1 answer

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

scala - How to use Spark SQL DataFrame with flatMap?

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903 views 1 answer

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

scala - Passing a Shapeless Extensible Record to a Function (continued)

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665 views 1 answer

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

scala - Why is the error "Unable to find encoder for type stored in a Dataset" when encoding JSON using case classes?

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1.1k views 1 answer

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