Forwarding or merging 'this' into a child class to aid chaining methods?

[Ali Çehreli]

On 03/06/2014 11:16 AM, anonymous wrote:

 >      public auto foo(this T)()
 >      {
 >          return cast(T) this;
 >      }
 >
 > http://dlang.org/template.html#TemplateThisParameter

Sweet! :) Unfortunately, it has a somewhat obfuscated definition: 
"TemplateThisParameters are used in member function templates to pick up 
the type of the this reference."

"type of the this reference" does not explain that it is about the type 
of the most derived object.

Ali