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
