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Date: Sun, 22 Feb 2015 13:02:00 -0800
From: Ethan Furman <ethan@stoneleaf.us>
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Subject: Re: Design thought for callbacks
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On 02/22/2015 05:13 AM, Cem Karan wrote:

> Output:
> From Evil Zombie: Surprise!
> From Your Significant Other: Surprise!
>=20
> In this case, the user made an error (just as Marko said in his earlier=
 message),
> and forgot about the callback he registered with the library.  The call=
back isn't
> really rising from the dead; as you say, either its been garbage collec=
ted, or it
> hasn't been.  However, you may not be ready for a callback to be called=
 at that
> moment in time, which means you're surprised by unexpected behavior.

But the unexpected behavior is not a problem with Python, nor with your l=
ibrary -- it's a bug in the fellow-programmer's
code, and you can't (or at least shouldn't) try to prevent those kinds of=
 bugs from manifesting -- they'll just get
bitten somewhere else by the same bug.

--
~Ethan~


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