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Posted to commits@spark.apache.org by sh...@apache.org on 2016/09/02 17:28:43 UTC
spark git commit: [SPARKR][DOC] regexp_extract should doc that it
returns empty string when match fails
Repository: spark
Updated Branches:
refs/heads/master 812333e43 -> 419eefd81
[SPARKR][DOC] regexp_extract should doc that it returns empty string when match fails
## What changes were proposed in this pull request?
Doc change - see https://issues.apache.org/jira/browse/SPARK-16324
## How was this patch tested?
manual check
Author: Felix Cheung <fe...@hotmail.com>
Closes #14934 from felixcheung/regexpextractdoc.
Project: http://git-wip-us.apache.org/repos/asf/spark/repo
Commit: http://git-wip-us.apache.org/repos/asf/spark/commit/419eefd8
Tree: http://git-wip-us.apache.org/repos/asf/spark/tree/419eefd8
Diff: http://git-wip-us.apache.org/repos/asf/spark/diff/419eefd8
Branch: refs/heads/master
Commit: 419eefd811a4e29a73bc309157f150751e478db5
Parents: 812333e
Author: Felix Cheung <fe...@hotmail.com>
Authored: Fri Sep 2 10:28:37 2016 -0700
Committer: Shivaram Venkataraman <sh...@cs.berkeley.edu>
Committed: Fri Sep 2 10:28:37 2016 -0700
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R/pkg/R/functions.R | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
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http://git-wip-us.apache.org/repos/asf/spark/blob/419eefd8/R/pkg/R/functions.R
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diff --git a/R/pkg/R/functions.R b/R/pkg/R/functions.R
index dbf8dd8..369b1d0 100644
--- a/R/pkg/R/functions.R
+++ b/R/pkg/R/functions.R
@@ -2876,7 +2876,8 @@ setMethod("randn", signature(seed = "numeric"),
#' regexp_extract
#'
-#' Extract a specific(idx) group identified by a java regex, from the specified string column.
+#' Extract a specific \code{idx} group identified by a Java regex, from the specified string column.
+#' If the regex did not match, or the specified group did not match, an empty string is returned.
#'
#' @param x a string Column.
#' @param pattern a regular expression.
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