Sutter's ISO C++ Trip Report - The best compliment is when someone else steals your ideas....

John Carter john.carter at taitradio.com
Sun Jul 8 20:55:15 UTC 2018


On Saturday, 7 July 2018 at 01:18:21 UTC, wjoe wrote:
> But that's not how D works. It throws an Error which can be 
> caught.
>
> If people are allowed to do something they assume it's 
> legitimate.
>
> It should be a compile time error to catch an Error, but it 
> doesn't even emit a warning and it seems to work well which is 
> probably proof enough for people to assume it's good.

I got myself so tangled up in knots with the equivalent in 
Ruby.... You can "rescue" the base Exception class... which 
initially I did everywhere to try give better error messages...

Which more often than not would result in everything going weird 
and insane instead of useful.

Eventually I replaced _every_ "rescue Exception" with "rescue 
StandardError" and life improved majorly.

Seriously folks, trying to "catch and handle" a programming bug 
leads to the very dark side of life.

Especially in a 'C/C++/D" like language where the exception is 
concrete evidence that the system is _already_ in an undefined 
and unreliable state.


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