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Re: error trapping

• From: "A. G. McDowell" <mcdowella@m...>
• To: xml-dev@i...
• Date: Thu, 21 Oct 1999 06:37:13 +0100

In article <2aDHJHA9skD4EwHl@m...>, A. G. McDowell
<mcdowella@m...> writes
>
>The suggested alternative to resumption makes most sense in the context
>of resource acquisition. Sacrificing rigor for brevity:
>while((resource = acquire()) != null) callback();
>The callback should either release some more resource or throw a
>(terminating) exception, so you exit the loop either normally, with the
>resource, or via the exception.
>
but meant
while((resource = acquire()) == null) callback();

assuming that acquire() returns null when it fails to get the resource,
so that is when we need to callback and retry.
Oops!
-- 
A. G. McDowell   
... If it's not tested, it doesn't work!

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• References:
  • Re: error trapping
    • From: james anderson <James.Anderson@m...>
  • Re: error trapping
    • From: John Cowan <cowan@l...>
  • Re: error trapping
    • From: "A. G. McDowell" <mcdowella@m...>

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