From 8164b893adec418bbc0430993a969fb444231003 Mon Sep 17 00:00:00 2001 From: Matthew Chen Date: Tue, 12 Jun 2018 12:55:20 -0400 Subject: [PATCH] Respond to CR. --- SignalMessaging/utils/ThreadUtil.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/SignalMessaging/utils/ThreadUtil.h b/SignalMessaging/utils/ThreadUtil.h index 32833f0ad..dde4de03b 100644 --- a/SignalMessaging/utils/ThreadUtil.h +++ b/SignalMessaging/utils/ThreadUtil.h @@ -29,6 +29,9 @@ NS_ASSUME_NONNULL_BEGIN // The "reverse index" is the distance of this interaction from // the last interaction in the thread. Therefore the last interaction // will have a "reverse index" of zero. +// +// We use "reverse indices" because (among other uses) we use this to +// determine the initial load window size. @property (nonatomic, nullable, readonly) NSNumber *focusMessagePosition; // If there are unseen messages in the thread, this is the timestamp