[haiku-commits] haiku: hrev48626 - docs/user/interface
- From: pulkomandy@xxxxxxxxxxxxx
- To: haiku-commits@xxxxxxxxxxxxx
- Date: Wed, 7 Jan 2015 17:28:48 +0100 (CET)
hrev48626 adds 1 changeset to branch 'master'
old head: 61c227c6eba2639b968c755bccd84fbd14fc6f1f
new head: 6aa4d138bfccc79e327768f2f128edc03b7c62e5
overview: http://cgit.haiku-os.org/haiku/log/?qt=range&q=6aa4d13+%5E61c227c
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6aa4d13: LayoutBuilder: document C++ method chaining behavior
Fixes #8515.
[ Adrien Destugues <pulkomandy@xxxxxxxxx> ]
----------------------------------------------------------------------------
Revision: hrev48626
Commit: 6aa4d138bfccc79e327768f2f128edc03b7c62e5
URL: http://cgit.haiku-os.org/haiku/commit/?id=6aa4d13
Author: Adrien Destugues <pulkomandy@xxxxxxxxx>
Date: Wed Jan 7 16:27:51 2015 UTC
Ticket: https://dev.haiku-os.org/ticket/8515
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1 file changed, 14 insertions(+)
docs/user/interface/LayoutBuilder.dox | 14 ++++++++++++++
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diff --git a/docs/user/interface/LayoutBuilder.dox
b/docs/user/interface/LayoutBuilder.dox
index 265b7c7..5776ace 100644
--- a/docs/user/interface/LayoutBuilder.dox
+++ b/docs/user/interface/LayoutBuilder.dox
@@ -90,6 +90,20 @@ BLayoutBuilder::Group<>(B_HORIZONTAL)
// back to the Group<>::GridBuilder
\endcode
+ Note that the C++ language does not impose any sequence points in such
+ method chains. This means the arguments to all calls may be evaluated
in an
+ unexpected order. For exemple, the following code may not result in
adding
+ the 3 views in rows 0, 1 and 2 in the target grid:
+
+\code
+ // Don't do this!
+ int row = 0;
+ BLayoutBuilder::Grid<>(target)
+ .Add(viewA, row++)
+ .Add(viewB, row++)
+ .Add(viewC, row++);
+\endcode
+
\since Haiku R1
*/
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