Lionel Henry

I work in the r-lib and tidyverse teams at RStudio. I'm interested in developing low-level tools that bring out the expressivity of the R language.


Interactivity and Programming in the Tidyverse

rstudio::conf 2020

Interactivity and Programming in the Tidyverse

January 31, 2020

In Tidyverse grammars such as dplyr you can refer to the columns in your data frames as if they were objects in the workspace. This syntax is optimised for interactivity and is a great fit for data...

Working with names and expressions in your tidy eval code

rstudio::conf 2019

Working with names and expressions in your tidy eval code

January 25, 2019

In practice there are two main flavors of tidy eval functions: functions that select columns, such as `dplyr::select()`, and functions that operate on columns, such as `dplyr::mutate()`.

Tidy evaluation is one of the major feature of the latest versions of dplyr and tidyr.

Webinars

Tidy evaluation is one of the major feature of the latest versions of dplyr and tidyr.

February 7, 2018

Tidy evaluation is one of the major feature of the latest versions of dplyr and tidyr. It enables Tidyverse users to write reusable functions and pipeline wrappers.