Recent questions tagged scala

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

scala - Spark - How to create a sparse matrix from item ratings

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874 views 1 answer

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

scala - How to use spark to generate huge amount of random integers?

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903 views 1 answer

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

scala - How to print elements of particular RDD partition in Spark?

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929 views 1 answer

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

scala - How to use from_json with Kafka connect 0.10 and Spark Structured Streaming?

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944 views 1 answer

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

scala - How to merge two columns of a `Dataframe` in Spark into one 2-Tuple?

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1.6k views 1 answer

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

scala - Why is this cyclic reference with a type projection illegal?

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825 views 1 answer

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

scala - Upload zip file using --archives option of spark-submit on yarn

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1.2k views 1 answer

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

scala - Sequencing an HList

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761 views 1 answer

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

scala - Why is my object not a member of package <root> if it's in a separate source file?

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1.2k views 1 answer

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

scala - Remove Temporary Tables from Apache SQL Spark

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847 views 1 answer

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

scala - How to add elements to Source dynamically?

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854 views 1 answer

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

scala - Adaptation of argument list by inserting () has been deprecated

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1.0k views 1 answer

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

scala - Multiple packages definition

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809 views 1 answer

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

scala - What's the difference between `::` and `+:` for prepending to a list)?

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759 views 1 answer

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

scala - How to map variable names to features after pipeline

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743 views 1 answer

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

scala - Combining Futures, Eithers and Options in for comprehensions

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770 views 1 answer

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

scala - How to force interpreter show complete stack trace?

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695 views 1 answer

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

scala - SBT: Exclude class from Jar

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1.2k views 1 answer

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

scala - How are co- and contra-variance used in designing business applications?

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703 views 1 answer

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

scala - Is there a way to add extra metadata for Spark dataframes?

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922 views 1 answer

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

scala - Ambiguous Reference to overloaded definition - One vs Two Parameters

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769 views 1 answer

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

scala - Add a compile time only dependency in sbt

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861 views 1 answer

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

scala - Why do I get a "missing parameter for expanded function" in one case and not the other?

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893 views 1 answer

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

scala - Multiple executable jar files with different external dependencies from a single project with sbt-assembly

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855 views 1 answer

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

scala - Why doesn't Option have a fold method?

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839 views 1 answer

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

scala - View SQL query in Slick

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974 views 1 answer

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

scala - Get the size/length of an array column

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906 views 1 answer

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

scala - How to create hive table from Spark data frame, using its schema?

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824 views 1 answer

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