“User” constructor for R6 class in R

Question

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 con

Answer 1

Since R6 classes are actually envoronments, you can use className$constructorName to archieve this result.

library(R6)

ERes <- R6Class(
  "ERes",
  public = list(
    eTable = NULL,
    eList = NULL,
    initialize = function(eTable, eList){
      self$eTable <- eTable
      self$eList <- eList
    }
  )
)

ERes$userConstructor <- function(someData){
  ERes$new(table(someData), as.list(someData))
}

myObject <- ERes$userConstructor(rpois(100, 5))

myObject$eTable
# someData
#  0  1  2  3  4  5  6  7  8 10 
#  3  3  7 16 16 20 14 10  9  2