re (NIL) vs nothing

re my last post/thread I don't want to waste anyone's time so please hold fire... I've split the filtering and chopping in two and even the filtered member LIst is disappearing (as a result of just filtering (when it shouldn't) so the problem doesn't look like it's to do with chopping the values

Re: (NIL) vs Nothing

Hi Dean, > (de fltr (Buf Ln) >(setq New_buf (mapcar '((Ele) (pack (tail (- (length Ln)) (chop Ele > (filter '((Ele) (pre? Ln Ele)) Buf > ... > #: (fltr '(aa ab) 'ab) > #-> (NIL) You can use 'extract' to get exactly the results you need: (de fltr (Buf Ln) (let N (inc

(NIL) vs Nothing

I've got this filtering function (de fltr (Buf Ln) (setq New_buf (mapcar '((Ele) (pack (tail (- (length Ln)) (chop Ele (filter '((Ele) (pre? Ln Ele)) Buf If any element 'Ele' of Buf starts with Ln it get's put into New_buf but not before the the Ln part is chopped off

Re: a bunch of questions about syntax

Thanks again for your explanations Alex, still some comments... On Fri, Jan 27, 2017 at 8:16 AM, Alexander Burger wrote: > > > BTW, I thought again about the terminology of "list" versus "cons pairs" > and > plain "cells". "list" is a rather unprecise term, I feel it is

Re: a bunch of questions about syntax

On Sat, Jan 28, 2017 at 02:35:09AM +0100, pd wrote: > sorry, I accidentally sent an incomplete message, here's the complete one > ... > >> > >> BTW, I thought again about the terminology of "list" versus "cons pairs" > >> and > >> plain "cells". "list" is a rather unprecise term, I feel it is not

Re: a bunch of questions about syntax

sorry, I accidentally sent an incomplete message, here's the complete one On Sat, Jan 28, 2017 at 1:51 AM, pd wrote: > Thanks again for your explanations Alex, still some comments... > > On Fri, Jan 27, 2017 at 8:16 AM, Alexander Burger > wrote: > >>

Re: Is there a shorter syntax for calling a method from a method in

Hi Alex That's great...thank you very much. Best Regards Dean On 27 January 2017 at 06:53, Alexander Burger wrote: > Hi Dean, > > > i.e. I'm calling m1 from m2 using the same syntax as calling methods > > externallybut just replacing *Obj with This. > > Yes, that's

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