Posted on Categories Opinion, Programming, RantsTags , , , , , , , , , 12 Comments on magrittr’s Doppelgänger

magrittr’s Doppelgänger

R picked up a nifty way to organize sequential calculations in May of 2014: magrittr by Stefan Milton Bache and Hadley Wickham. magrittr is now quite popular and also has become the backbone of current dplyr practice.

If you read my last article on assignment carefully you may have noticed I wrote some code that was equivalent to a magrittr pipeline without using the “%>%” operator. This note will expand (tongue in cheek) that notation into an alternative to magrittr that you should never use.


SupermanBizarro

Superman #169 (May 1964, copyright DC)

What follows is a joke (though everything does work as I state it does, nothing is faked). Continue reading magrittr’s Doppelgänger

Posted on Categories Opinion, Programming, Rants, StatisticsTags , , , 29 Comments on The Case For Using -> In R

The Case For Using -> In R

R has a number of assignment operators (at least “<-“, “=“, and “->“; plus “<<-” and “->>” which have different semantics).

The R-style guides routinely insist on “<-” as being the only preferred form. In this note we are going to try to make the case for “->” when using magrittr pipelines. [edit: After reading this article, please be sure to read Konrad Rudolph’s masterful argument for using only “=” for assignment. He also demonstrates a function to land values from pipelines (though that is not his preference). All joking aside, the value-landing part of the proposal does not violate current style guidelines.]


Honore Daumier 017 Don Quixote

Don Quijote and Sancho Panza, by Honoré Daumier


Continue reading The Case For Using -> In R