Github user felixcheung commented on a diff in the pull request:
https://github.com/apache/spark/pull/13476#discussion_r65656453
--- Diff: R/pkg/R/column.R ---
@@ -151,6 +151,40 @@ setMethod("substr", signature(x = "Column"),
column(jc)
})
+#' startsWith
+#'
+#' Determines if entries of x start with string (entries of) prefix
respectively,
+#' where strings are recycled to common lengths.
+#'
+#' @rdname startsWith
+#' @name startsWith
+#' @family colum_func
+#'
+#' @param vector of character string whose âstartsâ are considered
+#' @param character vector (often of length one)
+setMethod("startsWith", signature(x = "Column"),
+ function(x, prefix) {
+ jc <- callJMethod(x@jc, "startsWith", as.vector(prefix))
+ column(jc)
+ })
+
+#' endsWith
+#'
+#' Determines if entries of x end with string (entries of) suffix
respectively,
+#' where strings are recycled to common lengths.
+#'
+#' @rdname endsWith
+#' @name endsWith
+#' @family colum_func
+#'
+#' @param vector of character string whose âendsâ are considered
--- End diff --
ditto here
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