deprecate liply and isplit2

R/liply.r

@@ -6,6 +6,8 @@
 #' than the O(n ^ 2) performance from the naive strategy of growing the list
 #' each time.
 #'
+#' @section Warning:Deprecated, do not use in new code.
+#' @seealso \code{\link{plyr-deprecated}}
 #' @keywords manip
 #' @param .iterator iterator object
 #' @param .fun function to apply to each piece
@@ -21,7 +23,9 @@
 #'   # Iterators get used up:
 #'   liply(baseball_id, summarise, mean_rbi = mean(rbi, na.rm = TRUE))
 #' }
+# EXCLUDE COVERAGE START
 liply <- function(.iterator, .fun = NULL, ...) {
+  .Deprecated("llply")
   stopifnot(inherits(.iterator, "iter"))
   if (is.null(.fun)) return(as.list(.iterator))
 
@@ -52,13 +56,17 @@ liply <- function(.iterator, .fun = NULL, ...) {
 
 #' Split iterator that returns values, not indices.
 #'
+#' @section Warning:Deprecated, do not use in new code.
+#' @seealso \code{\link{plyr-deprecated}}
 #' @keywords internal
 #' @export
 isplit2 <- function (x, f, drop = FALSE, ...)  {
+  .Deprecated(c("splitter_d", "splitter_a"))
   it <- iterators::isplit(seq_len(nrow(x)), f, drop = drop, ...)
   nextEl <- function() {
     i <- iterators::nextElem(it)
     x[i$value, , drop = FALSE]
   }
   structure(list(nextElem = nextEl), class = c("abstractiter", "iter"))
 }
+# EXCLUDE COVERAGE END

R/plyr-deprecated.r

@@ -0,0 +1,12 @@
+#' Deprecated Functions in Package plyr
+#'
+#' These functions are provided for compatibility with older versions of
+#' \code{plyr} only, and may be defunct as soon as the next release.
+#'
+#' @usage
+#' liply(...)
+#' isplit2(...)
+#' @name plyr-deprecated
+# EXCLUDE COVERAGE START
+NULL
+# EXCLUDE COVERAGE END