try...catch slooowness?

[Rob]

Steven Schveighoffer wrote:
> On Tue, 21 Dec 2010 17:25:09 -0500, Rob <rob2970 at yah00.com> wrote:
>
>> Steven Schveighoffer wrote:
>>
>>> An exception is a recoverable error,
>>
>> Not necessarily. At some point, all the handling options could have
>> been tried but all failed in which case there is nothing left to do
>> except for letting something higher up (like the operating system)
>> deal with the situation. In such a case, recovery did not occur if
>> you consider recovery to mean that the program keeps running
>> normally.
>
> In D, unrecoverable errors derive from Error, recoverable ones derive
> from Exception.
>
> By 'recovery' I mean that the program can either continue to run or
> decide proactively to do something different (like print an error and
> exit).

That, decidedly, from common terminology usage industry-wide, is 
considered "unrecoverable". "Unrecoverable" doesn't mean crash and burn. 
Anything less than the program staying running is indicates something 
unrecoverable happened.