TIL: all exceptions before the commit point

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I have flipped through the Secure Distributed Programming with
Object-capabilities in JavaScript
<http://soft.vub.ac.be/events/mobicrant_talks/talk1_ocaps_js.pdf> slides a
few times, but this week I discovered a very interesting point about 48
minutes into the talk
<https://www.youtube.com/watch?v=oBqeDYETXME&feature=youtu.be&t=2915> that
isn't on the slides:

Do all of your gating checks before you do any of your irrevocable side
effects.

It's somewhat obvious in retrospect, but I don't recall reading it in the
"robust composition" thesis or anywhere else. Perhaps it's just my memory
that's failing. I should check again.


-- 
Dan Connolly
http://www.madmode.com/

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<div dir=3D"ltr"><div>I have flipped through the=C2=A0<a href=3D"http://sof=
t.vub.ac.be/events/mobicrant_talks/talk1_ocaps_js.pdf">Secure Distributed P=
rogramming with Object-capabilities in JavaScript</a>=C2=A0slides a few tim=
es, but this week I discovered a very interesting point <a href=3D"https://=
www.youtube.com/watch?v=3DoBqeDYETXME&amp;feature=3Dyoutu.be&amp;t=3D2915">=
about 48 minutes into the talk</a>=C2=A0that isn&#39;t on the slides:</div>=
<div><br></div><div>Do all of your gating checks before you do any of your =
irrevocable side effects.</div><div><br></div><div>It&#39;s somewhat obviou=
s in retrospect, but I don&#39;t recall reading it in the &quot;robust comp=
osition&quot; thesis or anywhere else. Perhaps it&#39;s just my memory that=
&#39;s failing. I should check again.</div><div><br><br>-- <br>Dan Connolly=
<br><a href=3D"http://www.madmode.com/">http://www.madmode.com/</a><br><br>=
</div></div>

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