Github user sun-rui commented on a diff in the pull request:
https://github.com/apache/spark/pull/7584#discussion_r35289630
--- Diff: R/pkg/R/DataFrame.R ---
@@ -1384,7 +1384,7 @@ setMethod("saveAsTable",
"org.apache.spark.sql.parquet")
}
allModes <- c("append", "overwrite", "error", "ignore")
- if (!(mode %in% allModes)) {
+ if (! (mode %in% allModes)) {
--- End diff --
I checkout the source code of the R interpreter, the most common style of
using ! is:
!<var>, !<function call> and !(<expression>)
while there is still in-consistency of this style in the R source code like:
!<space><expression>, ! <function call>, ...
I prefer to the former style. Take the following as example:
! dots.or.missing(e) && length(e) == 3
The real meaning of the expression is (! dots.or.missing(e)) && length(e)
== 3, but seems like
! (dots.or.missing(e) && length(e) == 3)
So the following looks better:
!dots.or.missing(e) && length(e) == 3
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