[Issue 8411] core.time: No easy way to check if Duration is empty
    via Digitalmars-d-bugs 
    digitalmars-d-bugs at puremagic.com
       
    Thu Mar 16 15:17:54 PDT 2017
    
    
  
https://issues.dlang.org/show_bug.cgi?id=8411
Steven Schveighoffer <schveiguy at yahoo.com> changed:
           What    |Removed                     |Added
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           Keywords|                            |pull
                 CC|                            |schveiguy at yahoo.com
--- Comment #3 from Steven Schveighoffer <schveiguy at yahoo.com> ---
I have a further, more difficult use case for this:
if(auto d = calculateSomeDuration())
{
   display(d);
}
This is not as easily worked around with the current API.
Adding opCast!bool was easy enough: https://github.com/dlang/druntime/pull/1793
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