Nothing
## ----include = FALSE----------------------------------------------------------
knitr::opts_chunk$set(
collapse = TRUE,
comment = "#>"
)
## -----------------------------------------------------------------------------
#' Prices of over 50,000 round cut diamonds
#'
#' A dataset containing the prices and other attributes of almost 54,000
#' diamonds. The variables are as follows:
#'
#' @format A data frame with 53940 rows and 10 variables:
#' \describe{
#' \item{price}{price in US dollars ($326--$18,823)}
#' \item{carat}{weight of the diamond (0.2--5.01)}
#' \item{cut}{quality of the cut (Fair, Good, Very Good, Premium, Ideal)}
#' \item{color}{diamond colour, from D (best) to J (worst)}
#' \item{clarity}{a measurement of how clear the diamond is (I1 (worst), SI2,
#' SI1, VS2, VS1, VVS2, VVS1, IF (best))}
#' \item{x}{length in mm (0--10.74)}
#' \item{y}{width in mm (0--58.9)}
#' \item{z}{depth in mm (0--31.8)}
#' \item{depth}{total depth percentage = z / mean(x, y) = 2 * z / (x + y) (43--79)}
#' \item{table}{width of top of diamond relative to widest point (43--95)}
#' }
#'
#' @source {ggplot2} tidyverse R package.
## ----eval = FALSE-------------------------------------------------------------
# #' @keywords internal
# "_PACKAGE"
## -----------------------------------------------------------------------------
#' An S4 class to represent a bank account
#'
#' @slot balance A length-one numeric vector
Account <- setClass("Account",
slots = list(balance = "numeric")
)
## -----------------------------------------------------------------------------
#' R6 Class Representing a Person
#'
#' @description
#' A person has a name and a hair color.
#'
#' @details
#' A person can also greet you.
Person <- R6::R6Class("Person",
public = list(
#' @field name First or full name of the person.
name = NULL,
#' @field hair Hair color of the person.
hair = NULL,
#' @description
#' Create a new person object.
#' @param name Name.
#' @param hair Hair color.
#' @return A new `Person` object.
initialize = function(name = NA, hair = NA) {
self$name <- name
self$hair <- hair
self$greet()
},
#' @description
#' Change hair color.
#' @param val New hair color.
#' @examples
#' P <- Person("Ann", "black")
#' P$hair
#' P$set_hair("red")
#' P$hair
set_hair = function(val) {
self$hair <- val
},
#' @description
#' Say hi.
greet = function() {
cat(paste0("Hello, my name is ", self$name, ".\n"))
}
)
)
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