coalesce with wrapr
coalesce is a classic useful SQL operator that picks the first non-NULL value in a sequence of values. We thought we would share a nice version of it for picking non-NA R with convenient operator infix...
View ArticleQuoting in R
Many R users appear to be big fans of "code capturing" or "non standard evaluation" (NSE) interfaces. In this note we will discuss quoting and non-quoting interfaces in R. The above terms are simply...
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Sharing Modeling Pipelines in R
Reusable modeling pipelines are a practical idea that gets re-developed many times in many contexts. wrapr supplies a particularly powerful pipeline notation, and a pipe-stage re-use system (notes...
View ArticleReusable Pipelines in R
Pipelines in R are popular, the most popular one being magrittr as used by dplyr. This note will discuss the advanced re-usable piping systems: rquery/rqdatatable operator trees and wrapr function...
View ArticleQuoting Concatenate
In our last note we used wrapr::qe() to help quote expressions. In this note we will discuss quoting and code-capturing interfaces (interfaces that capture user source code) a bit more. My position on...
View ArticleR Tip: Use Inline Operators For Legibility
R Tip: use inline operators for legibility. A Python feature I miss when working in R is the convenience of Python‘s inline + operator. In Python, + does the right thing for some built in data types:...
View ArticleFunction Objects and Pipelines in R
Composing functions and sequencing operations are core programming concepts. Some notable realizations of sequencing or pipelining operations include: Unix’s |-pipe CMS Pipelines. F#‘s forward pipe...
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Playing With Pipe Notations
Recently Hadley Wickham prescribed pronouncing the magrittr pipe as “then” and using right-assignment as follows: I am not sure if it is a good or bad idea. But let’s play with it a bit, and perhaps...
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R Journal Volume 10/2, December 2018 is out!
We forgot to say: R Journal Volume 10/2, December 2018 is out! A huge thanks to the editors who work very hard to make this possible. And big “thank you” to the editors, referees, and journal for...
View Article“If You Were an R Function, What Function Would You Be?”
We’ve been getting some good uptake on our piping in R article announcement. The article is necessarily a bit technical. But one of its key points comes from the observation that piping into names is a...
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