Why do some T.init evaluate to true while others to false?
ArturG via Digitalmars-d-learn
digitalmars-d-learn at puremagic.com
Fri May 27 07:43:47 PDT 2016
On Friday, 27 May 2016 at 09:25:55 UTC, Marc Schütz wrote:
> On Thursday, 26 May 2016 at 16:45:22 UTC, ArturG wrote:
>> im just playing with this template[1] is there anything else i
>> missed? (if you dont mind)
>> it basically treats any T.init as false and skips the
>> function/delegate and just returns type.
>>
>> [1] https://dpaste.dzfl.pl/d159d83e3167
>
> If you just want to check whether something is equal to its
> type's .init value, use the `is` operator, which does a bitwise
> comparison:
>
> if(value is typeof(value).init) ...
that still requiers a special case for floating points, arrays
and optionally empty string literals.
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