On Thursday, 12 August 2021 at 11:07:24 UTC, drug wrote:
12.08.2021 12:36, Learner пишет:
> It seems that there is no easy way to transition from a
postblit to a
copy constructor, no?
You just need both const and mutable copy ctors to replace
inout one:
```D
struct A {
int[] data;
this(ref return scope A rhs) { data = rhs.data.dup; }
this(ref return scope const A rhs) const { data =
rhs.data.dup; }
}
```
the mutable copy ctor accepts mutable data and the const copy
ctor accepts const and immutable data
That still fails:
Generating an `inout` copy constructor for `struct B` failed,
therefore instances of it are uncopyable
Also if I remove the `const` body (can I assign data if the
method is const?)
```D
struct A {
int[] data;
this(ref return scope A rhs) { data = rhs.data.dup; }
this(ref return scope const A rhs) const {}
}
Generating an `inout` copy constructor for `struct B` failed,
therefore instances of it are uncopyable
```
