xml-dev - Re: error trapping

["A. G. McDowell" <mcdowella@mcdowella.demon.co.uk>]

In article <2aDHJHA9skD4EwHl@mcdowella.demon.co.uk>, A. G. McDowell
<mcdowella@mcdowella.demon.co.uk> 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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