r6

Actual question What are my options to workaround the fact that R6 does not support multiple inheritance ? Disclaimer I know that R is primarily a functional language. However, it does also have very powerful object-orientation built in. Plus: I don't see what's wrong with mimicking OOD principles/behavior when you know you're prototyping for an object-oriented language such as C#, Java, etc. your prototypes of apps need to be self-sufficient ("full stack" including DB-backends, business logic and frontends/UI) you have such great "prototyping technology" like R6 and shiny at your disposal

I am learning how to use R6 classes (and in general R OO). In this tutorial I found an interesting way of presenting constructors. In section 6.3 a different kind of constructor is defined, returning a class instance with "new" called inside the function. That resembles the behavior of initializing a class object with a function that computes some stuff, and it would be useful for my purposes. I was wondering if this can be done in R6 as well, and, if so, if there are resources where I can learn how to do it properly. My example in S4 is as follows: ERes <- setClass("ERes", representation =

I'm trying to forget refclasses (R5) and move to R6 but there is a problem with dynamic code. I would add a new function and it works in R5: clsTrn <- setRefClass("clsTrn", fields = list(x = "numeric"), methods = list( add_function = function(rcode) { eval(parse(text=rcode), envir=.self) } ) ) cls <- clsTrn$new(x=4) cls$x # [1] 4 cls$add_function("predict = function(y) {return(.self$x*y)}") cls$predict(3) #[1] 12 Similar code doesn't work for R6. library(R6) clsTrnR6 <- R6Class("clsTrnR6", lock=FALSE, public = list( x = NA, initialize = function(x) { self$x <- x }, add_function = function