Re: [q-lang-users] where

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

Eddie Rucker wrote:
> Given the following script
> 
> // strip character C from the left and right sides of a string
> strip C "" = "";
> strip C S = strip C $ sub S 0 (N-1) if (S!N = C) where N = #S-1;
> 	  = strip C $ sub S 1 N     if (S!0 = C) where N = #S-1;
> 	  = S                       otherwise;
> 
> Is it possible to have another type of local variable defined at the end
> of a list of equations that would apply to all of them?

No. I actually thought about this problem before. As local variables are
maintained on the expression stack, it probably wouldn't be that
difficult to modify the VM to handle such shared qualifiers (as long as
they share the same left-hand side). But I haven't been able to come up
with a good syntax to support that in the language.

So the solution is indeed to use case or if-then-else in such situations
instead.

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