No you didn't misunderstand AlexI guessed the necessity for "for" when
the extracted line gave an error but didn't understand why. Your referral
to "for"s documentation explained though I had to play with some examples
to drum it in :). Cristophe's examples were very helpful too because
althou
Hi Christophe,
> >> : (T (== 1 1) T)
> >> !? (T (== 1 1) T)
> >> T -- Undefined
>
> Hi Alex, I'm not sure that you understood Dean's question.
> Or maybe I didn't understand your answer.
Not sure. I hope I didn't misunderstand ;)
> What Dean did:
> To understand your definition of mmbr, Dean e
Alex, Cristophe
I can see I've got quite a bit to learn. Thank you for drawing my attention
to the way FOR and Lisp work. I wasn't expecting that at all but it looks
very elegant. Thank you also for the extra examples. They do help.
Best Regards
Dean
On 24 November 2016 at 15:35, Christophe Gragn
On Thu, Nov 24, 2016 at 1:24 PM, Alexander Burger wrote:
> Hi Dean,
>
>> : (T (== 1 1) T)
>> !? (T (== 1 1) T)
>> T -- Undefined
>> ..
>> i.e. I'm assuming this is a...
>> "A list is evaluated as a function call, with the CAR as the function
>> and the CDR the arguments to that function. These arg
Hi Dean,
> : (T (== 1 1) T)
> !? (T (== 1 1) T)
> T -- Undefined
> ..
> i.e. I'm assuming this is a...
> "A list is evaluated as a function call, with the CAR as the function
> and the CDR the arguments to that function. These arguments are in turn
> evaluated according to these three rules."
> ..
If I isolate the following line... I get T as undefined
: (T (== 1 1) T)
!? (T (== 1 1) T)
T -- Undefined
Whereas...inside the function
(de mmbr (Trgt L)
(for Ele L
#(T (== Ele Trgt) T)
(T (== 1 1) T)
)
)
: (mmbr 'B '(A B C))
-> T
: (mmbr 'D '(A B C))
-> T
it works fine.
I'm
Alex
Thank you very much for this.
Best Regards
Dean
On 23 November 2016 at 21:00, Alexander Burger wrote:
> Hi Dean,
>
> > I'm just wondering what my options are re doing this
> >
> > (de mmbr (Trgt L)
> >(for Ele L
> > (if (== Ele Trgt) (println "found so exit with true")
> >
Hi Dean,
> I'm just wondering what my options are re doing this
>
> (de mmbr (Trgt L)
>(for Ele L
> (if (== Ele Trgt) (println "found so exit with true")
> (println "try next")
> )
>)
>(prinl "list exhausted so return false")
> )
>
> (mmbr 'B '
I'm just wondering what my options are re doing this
(de mmbr (Trgt L)
(for Ele L
(if (== Ele Trgt) (println "found so exit with true")
(println "try next")
)
)
(prinl "list exhausted so return false")
)
(mmbr 'B '(A B C))
I only know how to itera