wtfdbg

This package is to facilitate debugging practice for the RStudio Conference Workshop What They Forgot To Teach You About R.

The fruit_avg() function is from Jenny Bryan’s rstudio::conf(2020) keynote Object of type ‘closure’ is not subsettable https://github.com/jennybc/debugging.

Workshop exercises are at https://github.com/rstats-wtf/wtf-debugging. Use of the wtfdb package corresponds to 03_exercise: debugging others’ code.

Installation

You can install the development version of wtfdbg from GitHub with:

# install.packages("devtools")
devtools::install_github("rstats-wtf/wtfdbg")

This works

library(wtfdbg)
fruit_avg(fruit, "berry")
#> Found 2 fruits!
#>  calories    weight yumminess 
#>       2.5       5.5       7.0

This does not

fruit_avg(fruit, "peach")
#> Found  fruits!
#> Error in rowMeans(mini_dat): 'x' must be an array of at least two dimensions

Can you use debugging tools to figure out why?