From: David Abrahams (dave_at_[hidden])
Date: 2002-11-01 01:07:58
The docs for trackable really caused me a lot of misery as well. They
"The trackable class is responsible for managing the automatic
disconnection of signals and slots when an object that is bound as
part of a slot is destroyed."
But this makes no sense, since the slot function is copied, and its
lifetime is managed by the signal. If an object is bound as part of a
slot, that object is copied, and the signal controls its lifetime
forever. What you meant to say was:
"...when a pointer or reference to an object that is bound as part
of a slot is destroyed."
Effects: disconnects all connected slots.
is completely inadequate. Of course it doesn't disconnect all
connected slots! It disconnects the slots which contain a pointer or
reference to this trackable object which is reachable via invoking
visit_each on a slot function... or something like that.
Also, the trackable docs really need some examples. I see there are
some perfectly good ones in libs/signals/test and
libs/signals/example. You should just throw one of those into the
Incidentally, you might consider integrating with boost::weak_ptr -
just a thought.
-- David Abrahams dave_at_[hidden] * http://www.boost-consulting.com
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