FAQ

FAQ

Caching of knitr/rmarkdown chunks does not work with mlr3

Answer

{knitr} per default uses R's lazy-load database to store the results of individual chunks. The lazy-load database is an internal feature of R, and has issues handling active bindings (https://github.com/r-lib/R6/issues/152). Fortunately, it is possible to disable lazy-loading by setting the chunk option `cache.lazy` to `FALSE`:

knitr::opts_chunk$set(cache = TRUE, cache.lazy = FALSE)

How to keep all mlr3 packages up-to-date?

Answer

Either run R's `update.packages()` to update all installed packages, or run

devtools::update_packages("mlr3verse", dependencies = TRUE)

to update only packages from the mlr3verse. Note that this also updates recursive dependencies not listed as a direct import.