Store set of categories in CategoricalVariable about individual HOT 6 CLOSED

Cool =] So it was a good idea to check.

Yeah I mostly wanted it so I can do something like this to get marginal counts, or something more elegant to get the cross tabulation table of counts. I see now how it originally came across as being similar to #47

render_multiple_categorical_variables <- function(renderer, ...) {
  vars <- match.call(expand.dots = FALSE)$`...`
   function(t) {
    for( v in vars) {
       for (c in v$get_categories()) {
          renderer$render(paste0(v,"_",c, '_count'), v$get_size_of(c), t)
       }
    }
  }
}

from individual.

This feels quite related to #47

Is it a duplicate?

Deffo needed

from individual.

Ah, even more simple, just adding a value to CategoricalVariable that stores the unique categories (passed as argument categories in the constructor).

from individual.

Ah ok, but then how do we initialise individuals who have more than one category?

from individual.

Oh, this isn't touching issue #47. This one would be as simple as adding a line like:

self$.categories <- categories

to CategoricalVariable$initialize. I just opened an issue for it because I was wanted to make sure this doesn't go against some design philosophy I'm not aware of. It's probably superfluous to have opened an entire issue for such a small change...

from individual.

Oh I seeeee!

Yes that would be useful.

self$.categories <- categories

would not be DRY.

A bitset_get_categories function that gets the categories from the C++ class is the principled way to do it

from individual.