Recent questions tagged scala

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

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

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1 answer 896 views

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

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

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1 answer 922 views

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

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

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

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

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

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

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

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

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1 answer 1.2k views

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

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

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1 answer 756 views

scala - Sequencing an HList

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

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

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

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1 answer 843 views

scala - Remove Temporary Tables from Apache SQL Spark

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

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1 answer 849 views

scala - How to add elements to Source dynamically?

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

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

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

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1 answer 800 views

scala - Multiple packages definition

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

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1 answer 747 views

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

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

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1 answer 735 views

scala - How to map variable names to features after pipeline

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

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1 answer 763 views

scala - Combining Futures, Eithers and Options in for comprehensions

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

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1 answer 687 views

scala - How to force interpreter show complete stack trace?

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: Exclude class from Jar

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

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1 answer 699 views

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

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

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1 answer 915 views

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

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

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1 answer 762 views

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

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

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1 answer 855 views

scala - Add a compile time only dependency in sbt

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

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1 answer 884 views

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

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

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1 answer 846 views

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

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

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1 answer 836 views

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

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

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1 answer 970 views

scala - View SQL query in Slick

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

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1 answer 901 views

scala - Get the size/length of an array column

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

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1 answer 818 views

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

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

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