Voldemort type "this" pointer

[Mike Parker]

On Wednesday, 21 April 2021 at 10:00:51 UTC, realhet wrote:

> My question is about what is the "this" pointer for. Is it for 
> storing the stack frame of the function in order to be able to 
> serve queries that can lazily use the data from the stack frame?
>
> (I guess it's something else because that part of the stack 
> might be undefined after exiting from the function.)

 From the documentation

> 1. A nested struct is a struct that is declared inside the 
> scope of a function or a templated struct that has aliases to 
> local functions as a template argument. Nested structs have 
> member functions. It has access to the context of its enclosing 
> scope (via an added hidden field).
> 2. A struct can be prevented from being nested by using the 
> static attribute, but then of course it will not be able to 
> access variables from its enclosing scope.

https://dlang.org/spec/struct.html#nested