Rodrigo questions

• ESS does not deal well with data.table and knitr
• Error when using rbind to merge data.tables and one of them is empty
• How to call a function that returns multiple rows and columns in a data.table?
• How to evaluate code line-by-line in org-mode?
• How to deal with NA in a panel data regression?
• What is the most efficient way to sum all columns whose name starts with a pattern?

Rodrigo answers