TMOTTM questions

• Haskell: Why does (x:xs) match the list with only one element?
• R data table: Why are values of concatenated list lost?
• This git log output shows two branches as if they weren't branches? Please explain
• Whats the advantage of doing optional binding over sequential binding in Swift?
• How to one-hot encode a vector with arbitrary number of unique values?
• Vim command to comment out a selection of lines?
• Haskell: Why is the pattern matching not exhaustive even if it compiles and executes?
• Can I have vim highlight code in R markup?
• How to make bars in ggplot2 barplot interactive in shiny?
• How to auto-add legend in [R]?

TMOTTM answers