Andrew questions

Andrew answers

• dplyr: select by name and value at the same time
• R - How to both unlist and concatenate
• Index consecutive duplicates in vector
• Counting days of the year with leap years
• R strsplit using Regex
• How do I filter a range of numbers in R? [duplicate]
• Find all subsequences with specific length in sequence of numbers in R
• R return true or false per row if string contains any of a list of words
• Creating a vector in R of counts for number of times each element appears in another vector
• Deduplicate a table based on values in 2 columns + fuzzy matching