Need help with movement from C to D

Artur Skawina via Digitalmars-d-learn digitalmars-d-learn at puremagic.com
Tue May 6 08:13:28 PDT 2014


On 05/06/14 16:45, via Digitalmars-d-learn wrote:
> On Tuesday, 6 May 2014 at 14:25:01 UTC, Artur Skawina via Digitalmars-d-learn wrote:
>> I'm not sure why you'd want to wrap the .offsetof expression in
>> a template, but it can easily be done like this:
>>
>>    enum offsetOf(alias A, string S) = mixin("A."~S~".offsetof");
> 
> Great, that's even shorter.
> 
> Somehow I was fixated on converting the symbol to a string first, but of course the name is directly available in the mixin:
> 
>     enum offsetof(alias typenfield) = mixin("typenfield.offsetof");

I didn't realize that worked, but it does. So...

   enum offsetOf(alias A) = A.offsetof;


But I have no idea why anybody would want to wrap this trivial
expression like that. 

And, I have no idea if the, hmm, /unconventional/ D offsetof semantics
are in the bugzilla. It's not really a "bug", but a design mistake...

artur


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