Re: [q-lang-users] New 'where' syntax

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

Eddie Rucker wrote:
> Super Cool!

So we already have two thumbs up now, nice. :) Did anyone find any
bugs/flaws/gripes with the syntax yet?

Ok, I guess it's about time for a first release candidate now. I'll do
that as soon as I've updated the documentation.

> This is clean. It is like most other programming languages: introduce the
> local variable and initialize it before use. I think this will make it
> easier for people comming from other languages.

Right, but note that the similarity is mostly syntactical. Q's 'where'
clauses will still feel unfamiliar to most programmers because:

(1) those local variables aren't really mutable (although they may be
rebound);

(2) 'where' clauses are both variable bindings *and* conditions (if a
pattern match fails in a variable binding, the entire equation fails);

(3) collections of several 'if' and 'where' clauses are processed in a
"backward" fashion, consider e.g.: if X>Y where Y=bla Z where Z=foo X.

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