Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/21482#discussion_r192574568
--- Diff: R/pkg/R/functions.R ---
@@ -907,6 +907,30 @@ setMethod("initcap",
column(jc)
})
+#' @details
+#' \code{isinf}: Returns true if the column is Infinity.
+#' @rdname column_nonaggregate_functions
+#' @aliases isnan isnan,Column-method
+#' @note isinf since 2.4.0
+setMethod("isinf",
--- End diff --
We don't need to have duplicate method definition like this. Maybe we can
follow `isNaN`'s approach if we really need to have both `isinf` and `isInf`.
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