try/catch idiom in std.datetime

[Jesse Phillips]

On Friday, 22 November 2013 at 01:49:11 UTC, Shammah Chancellor 
wrote:
> On 2013-11-18 06:32:46 +0000, Andrei Alexandrescu said:
>> 
>> 1. Fix scope(failure) and then use it.
>> 
>> Andrei
>
> Huh?  Scope failure has no purpose here.  It does not CATCH the 
> exception and prevent it from bubbling up the call chain.    
> Try/catch does do this.
>
> -Shammah

If the code is:

     scope(failure) assert(0);

Then it is a statement that the function doesn't throw. So there 
isn't a need to catch the exception, it is merely a way to state 
to the compiler "I've verified I know what I'm talking about and 
this function really doesn't ever throw."

Right now just having scope(failure) in the body is making this 
statement, and that is wrong.