regex code snippets in r

find a file using a pattern in a list of directories in r

find patterns in a file within quotes in r

find the extension of a file in r

get data from internet in r

regex after underscore in r

regex all numbers in r

regex number in r

regex return string after the last underscore in r

regex return string after underscore in r

regex second number in r

remove a column in a df which contamin special characters in r

sort a dataframe according to a specfic variable pattern in r

variable name that contains a pattern in r

what does "\\3" mean in r