Suppose I have a closure add_y(y) which returns a function that adds y to its input. add_y <- function(y) { function(x) { x + y } } add_4 <- add_y(4) So the value of add_4 is a function t...

I have a project that used R 3.6, I have upgraded R to 4.0.2 and would like to use 4.0.2 for this project. I'm wondering how to go about doing so, or should I completely delete renv/ and rebuild? E...

Is there a way to source() a script in R such that it is attached as a parent to the global environment (.GlobalEnv)? Currently, when I source a script, all variables and functions of that script ...

Is it possible to lock the global environment and still allow .Random.seed to be set or removed? The default behavior of lockEnvironment() is too aggressive for my use case. lockEnvironment(global...

What advantage/disadvantage is there for using one over other in the following two cases? Case-I is returning its output as an environment and Case-II is returning its output as a list. Case I: f...

I have the following Rmd file I called test.Rmd: --- title: "test" output: html_document --- ```{r} print(y) ``` ```{r} x <- "don't you ignore me!" print(x) ``` I want to call render the fo...