Added to shouldPrint.md that it is read-once.

Rdatatable · May 19, 2016 · 552fbe8 · 552fbe8
1 parent 3ec2d61
commit 552fbe8
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/man/shouldPrint.Rd b/man/shouldPrint.Rd
@@ -12,6 +12,7 @@
 }
 \details{
   Should IRkernel/Jupyter print a data.table returned invisibly by DT[,:=] ?
+  This is a read-once function since it resets an internal flag. If you need the value more than once in your logic, store the value from the first call.
 }
 \value{
   TRUE or FALSE.