Add separator parameter to DataFrame.flatten

Kotlin / dataframe

Structured data processing in Kotlin

https://kotlin.github.io/dataframe/overview.html

Apache License 2.0

763 stars 48 forks source link

Add separator parameter to DataFrame.flatten #667

Closed zaleslaw closed 2 months ago

zaleslaw commented 2 months ago

Fixes #666 and #660

Added a 'separator' parameter to the DataFrame.flatten function to customize the separator used in column names when 'keepParentNameForColumns' is true. This allows greater flexibility in formatting column names. Tests have been updated accordingly to check for proper functionality.