On Apr 19, 4:06 pm, James Reeves <jree...@weavejester.com> wrote:
> On 19 April 2012 19:46, Ambrose Bonnaire-Sergeant
>
> <abonnaireserge...@gmail.com> wrote:
> > I've been doing some thinking about the treatment of nil in a
> > statically typed version of Clojure.
>
> Statically typed in what way? Java's type system doesn't seem
> particularly suited to a functional programming language like Clojure.
>
> - James

There's nothing about functional programming that precludes static
typing. Haskell, say, does a lovely job of static typing without
making you pound out a bunch of "keyboard typing" for every function
like Java would.

For example, the type signature for foldl (Haskell's reduce) is:
(a -> b -> a) -> a -> [b] -> a

"Reduce takes:
  - A function taking an A and a B and returning an A
  - An A to start with
  - A list of Bs
And returns an A".

This is sufficiently general for all applications of reduce, and if
you don't feel like typing it out the compiler can infer it for you
from the source.

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