Lets say I have a certain number of xlsx files I want to use the map function on to pull together as one. I would use list.files(pattern=".xlsx), providing me with ALL the xlsx files in this directory but I want to exclude a certain number of these xlsx files which I might not need. How might I do this other than to filter them out after the fact?
Its hard to give you a specific advice without sample of the kind o files you want to keep and the ones you want to exclude but I'm almost sure that you can achieve what you want by using some regular expression in the
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