On Saturday, 28 October 2023 at 12:38:42 UTC, Subhaditya Nath
wrote:
This works fine –
I think it's because you're using a class. Try for example:
```d
import std.range;
import std.stdio;
import std.algorithm.iteration;
void main() {
auto cls = new Class;
cls.range1.each!writeln;
}
class Class {
auto range1() {
return iota(0, 100).filter!(x => x % 2).take(25);
}
}
```
The lambda function x => x % 2 is created within the class scope,
which means it implicitly captures this. The filter function is a
template that gets instantiated in a way that requires access to
this, which is not available in the static context.
The range1 member is declared like a field within the Class, but
it's initialized in place, outside of a constructor or method.
This sort of initialization doesn't have access to this because
it's not happening within an instance context (like within a
method where this is valid).
So, then maybe you understand why it didn't work.
