An Issue I Wish To Raise Awareness On

[Atila Neves via Digitalmars-d]

On Saturday, 12 August 2017 at 19:34:35 UTC, Arek wrote:
> On Friday, 21 July 2017 at 08:53:44 UTC, Atila Neves wrote:
>
>>
>> This works fine in dmd 2.075:
>>
>> struct A
>> {
>>     this(string a) {}
>>     this(string a) shared {}
>>
>>     ~this() {}
>>
>>     this(this T)(this) {} // you can reflect to find out if 
>> shared
>> }
>>
>> void main()
>> {
>>     auto nonShared = A("");
>>     auto shared_ = shared A("");
>>     auto nonSharedCopy = nonShared;
>>     auto sharedCopy = shared_;
>> }
>>
>>
>> Atila
>
> This look interesting: this(this T)(this) {}
> What is it? Postblit?
>
> It compiles but doesn't work for me.
>
> this(this T)(this) {writeln("postblit"); }   // doesn't print 
> anything
>
> Arek

It's a template postblit constructor - it'd get instantiated 
differently depending on the type of the implicit `this` 
parameter and would be able to fix things up taking into account 
whether or not `this` was shared (or immutable).

Atila