Comparing Exceptions and Errors

[Ali Çehreli]

On 6/3/22 16:40, Steven Schveighoffer wrote:

> https://www.schveiguy.com/blog/2022/05/comparing-exceptions-and-errors-in-d/ 

Cool! I didn't know catching Errors behaves specially in unittest blocks 
and contracts.

One feedback I have is about non-main threads. Although everybody agrees 
that Errors should not be caught, the main thread does so and prints the 
useful output that you show in the article.

If the main thread is allowed to do that, we should do as much (or less) 
in non-main threads as well. Otherwise, threads disappear without a trace.

If we are paranoid and want to do as little as possible, at least we 
should attempt to copy a string literal to stderr. Something like 
"Thread exiting with Error." And exit(1) right after that.

But all of that is wishful programming because if the program is in an 
illegal state, should we attempt to report it? If we should not, 
shouldn't the main thread should not either? (Sorry, non-native Inglish 
speaker here. :p)

Ali