Andrew questions

Andrew answers

• extend gsub and grepl to ignore substrings between given delimiters
• In R, How do I filter a data frame to only include rows with >=2 non-NA values?
• R tidyverse how to do two pivot_longer after each other instead of a single one
• r subsetting based on a character variable for unique ids
• remove invisible characters from a UTF-8 string
• fast partial match checking in R (or Python or Julia)
• Tidyverse: Replacing entire strings based on partial matches
• dplyr: select by name and value at the same time
• R - How to both unlist and concatenate
• Index consecutive duplicates in vector