Interesting rant about Scala's issues

[Ben Boeckel]

On Thu, Apr 03, 2014 at 18:51:56 -0700, Walter Bright wrote:
> Since in D you can detect if a function is pure, and specialize
> accordingly, it is not necessary to require that the filter function
> be pure.

Is there a built-in compose operator or function (Haskell's (.)
operator)? How would you copy the common attributes of the composed
functions to the new function (if not builtin)?

--Ben