Holger Brandl questions

Holger Brandl answers

• dplyr lead/lag with group_by [duplicate]
• "Observer ... was not registered" error
• Kotlin: Convert large List to sublist of set partition size
• How do i print out the JAVA classpath in gradle?
• Kotlin Script (.kts) - How to divide it into multiple files?
• Put stars on ggplot barplots and boxplots - to indicate the level of significance (p-value)
• How to remove single quote from a string in R?
• how do i run (configure to run) .r file in intellij idea?
• Android like Toast in Swing
• Migration of Spring from 3.2 to 4.1.1: trouble with JSON serialization