Index: base/time/time.h |
diff --git a/base/time/time.h b/base/time/time.h |
index 648445f35a2394ec7bea7a5506a2dbd68ce12a67..9163795829959b847f1d73b3be88d679c392db25 100644 |
--- a/base/time/time.h |
+++ b/base/time/time.h |
@@ -25,6 +25,11 @@ |
// instance. Thus, they can be efficiently passed by-value (as opposed to |
// by-reference). |
// |
+// Prefer passing these classes by value: |
danakj
2016/09/30 20:18:56
can you combine these two comments then cuz saying
robliao
2016/09/30 20:26:29
Done!
// All time classes are copyable, assignabl
|
+// void MyFunction(TimeDelta arg); |
+// If circumstances require, you may also pass by const reference: |
+// void MyFunction(const TimeDelta& arg); // Not preferred. |
+// |
// Definitions of operator<< are provided to make these types work with |
// DCHECK_EQ() and other log macros. For human-readable formatting, see |
// "base/i18n/time_formatting.h". |