Re: [q-lang-users] composing or lambda?

[Albert G. <Dr....@t-...>]

Eddie Rucker wrote:
> Addendum (add this to the readability/performance question): I also just
> discovered I don't need variables (although I saw something like this
> somewhere in the docs):
> 
> addSurvey = zipwith (zipwith (+));
> addSurveyId = map (mklist 0 . (#));

Yes, that's what Haskellers call the "pointless style" (pun intended).
In Haskell there's no semantic difference between the two styles. In Q
there is a slight difference in operational semantics, namely that with
a definition like "foo = bar" the expression "foo" is reduced
immediately, whereas with "foo X = bar X" you have to supply an argument
to foo before a reduction happens.

Albert

-- 
Dr. Albert Gr"af
Dept. of Music-Informatics, University of Mainz, Germany
Email:  Dr....@t-..., ag...@mu...
WWW:    http://www.musikinformatik.uni-mainz.de/ag