doc

Author: s-fleck

DESCRIPTION

@@ -1,7 +1,7 @@
 Type: Package
 Package: dint
 Title: A Toolkit for Year-Quarter, Year-Month and Year-Isoweek Dates
-Version: 1.0.0.9009
+Version: 2.0.0
 Authors@R: person("Stefan", "Fleck", email = "[email protected]", role = c("aut", "cre"))
 Maintainer: Stefan Fleck <[email protected]>
 Description: 

NEWS.md

@@ -7,6 +7,7 @@
 * **breaking**: all `first_day_of_*()` and `format_date_y*()` functions now
   have shorter names: `first_of_*()` and `format_y*()`. The original names
   will still work until the next release but give a deprecation warning.
+* Added support for `c()`, `min()`, `max()`, `range()`
 * You can now direclty supply a numeric year to `first_of_year()` and 
   `last_of_year()` (e.g. `first_of_year(2018)`)
 * added `date_yw` for storing isoweeks and modified existing funtions to 

R/arithmetic.R

@@ -2,15 +2,20 @@
 
 #' Maxima and Minima for date_xx
 #'
-#' @param ... `date_xx` vectors. It is up to the user to ensure that they are
-#'   of the same subclass.
+#' @param ... `date_xx` vectors with the same subclass
 #' @inheritParams base::Summary
 #'
 #' @return
 #'   for `min()` and `max()` a scalar of the same `date_xx` subclass as it's
 #'   input, for range a vector of length 2
 #'
 #' @export
+#'
+#' @examples
+#' min(date_yq(2014, 1), date_yq(2014, 2))
+#'
+#' # raises an error
+#' try(min(date_yq(2014, 1), date_ym(2014, 2)))
 Summary.date_xx <- function (
   ...,
   na.rm