Create list_of subclass

Create list_of subclass

Usage

new_list_of(
  x = list(),
  ptype = logical(),
  size = NULL,
  ...,
  class = character()
)

Arguments

x

A list

ptype

The prototype which every element of x belongs to. If NULL, the prototype is not specified.

size

The size which every element of x has. If NULL, the size is not specified.

...

Additional attributes used by subclass

class

Optional subclass name