To throw or to throw not?

[Steve Holden]

Emanuele D'Arrigo wrote:
> I'm pondering on what is a bit of a philosophical dilemma.
> When should I throw an exception and when should I not?
> 
> Suppose I have myFunc1() calling myFunc2() which in turn calls myFunc3
> ().
> Suppose myFunc3() has detected a problem. What should it do?
> 
> Throw an exception, forcing myFunc2() to handle it and/or trigger
> another exception for myFunc1() to deal with? Or should it simply
> return a meaningful error code, for myFunc2() and myFunc1() to handle
> as an option but not forcing them to do so?
> 
Remember that with exceptions, if Func2 doesn't want to process the
exception it doesn't have to do anything at all to have the exception
re-raised: it simply doesn't trap the exception.

regards
 Steve
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