On 8/22/22 12:36 PM, realhet wrote:
Hello,
I managed to make a universal getParent() function which can preserve
constness.
I also had success with inout functions that work with this inout
getParent method.
Is it possible to do something like this but for the allParents input
range producer method?
In the const range implementation, the internal storage is non-const, it
is just implicitly converted to const in the front() property.
It gives the protection I was needed but is it possible to make this
prettier?
Technically your code is a reasonable compromise. The two versions are
different enough that it might not make sense to combine them.
It is possible to write the same function for both const and mutable
overloads by using the `this` template parameter:
```d
import std.stdio;
class C
{
void foo(this This)(string s) {writefln("for %s this is %s", s,
This.stringof); }
}
void main()
{
auto c = new C;
c.foo("mutable");
const c2 = c;
c2.foo("const");
}
```
But your common code is going to have a few static ifs in it, simply
because const class instances are not assignable.
You might find some success with std.typecons.Rebindable.
-Steve
