Can't modify this

[Ary Borenszweig via Digitalmars-d-learn]

On 6/28/14, 6:21 PM, H. S. Teoh via Digitalmars-d-learn wrote:
> On Sat, Jun 28, 2014 at 05:40:19PM -0300, Ary Borenszweig via Digitalmars-d-learn wrote:
>> This doesn't work:
>>
>> class Foo {
>>    this() {
>>      this = new Foo;
>>    }
>> }
>>
>> Error: Cannot modify 'this'
>>
>> However you can do this:
>>
>> class Foo {
>>    this() {
>>      auto p = &this;
>>      *p = new Foo();
>>    }
>> }
>>
>> It even changes the value of this!
>>
>> Should that compile? I mean, it's the same as modifying 'this'...
>
> I'd say, file an enhancement request on the bug tracker.
>
> However, there comes a point, where given enough indirections, it would
> be infeasible for the compiler to figure out exactly where everything
> points, and so you'll be able to circumvent the compiler check somehow.
> If you're out to thwart the compiler, then eventually you will succeed,
> but it begs the question, why?
>
>
> T

I think that if you disallow taking the address of `this`, then the 
problem is solved.

This is not a big issue (more a curiosity). I just wanted to know what 
is the correct way to do in this case.