dmd 2.068 deducing purity

[Jack Applegame via Digitalmars-d-learn]

On Tuesday, 25 August 2015 at 14:05:17 UTC, Steven Schveighoffer 
wrote:
> Can you post an example?

import std.range;
import std.algorithm;

class Foo {
	int baz() {	return 1;}
	void bar() {
		auto s = [1].map!(i => baz()); // compiles
		auto r = [1].map!(i => [1].map!(j => baz())); // Error: need 
'this' for 'baz' of type 'int()'
	}
}