ReturnThis/@chain

[dsimcha]

== Quote from Tomek Sowiński (just at ask.me)'s article
> > pragma(msg, typeof(bar.val(someValue)));  // Bar, not Foo.
> This looks like a job for the template this parameter:
>      T val(this T)(int newVal) {
>          _val =3D newVal;
>          return cast(T) this;
>      }
> Funny enough, if you put Bar into Foo (Foo bar =3D new Bar; ) it doesn't=
>   =
> work no more.
> Tomek

NO #$(&$# WAY!!!!!  I (ab)use D metaprogramming constantly and was completely
unaware of template this parameters.  This is **exactly** what I needed and I
can't believe it's in the language already.