Re: Matching and Hashes

[Joe Golden]

Right you are.  Brilliant!  Documented indeed!

On Wed, Jan 25, 2017 at 05:47:22PM +0100, Alexander Burger wrote:

Hi Joe,


The T appears to act as a function in your first option. Does that act like
"If true return the cdr then break out of the for loop"?


Yes, exactly. The 'T' is indeed not a function, but the marker of special
clauses in the 'for' syntax (but also 'loop' or 'do'). 'NIL' is also supported.

The reference of 'for' says, terse as usually:

  If a clause has NIL or T as its CAR, the clause's second element is evaluated
  as a condition and - if the result is NIL or non-NIL, respectively - the prg
  is executed and the result returned.



I could do this in perl, but I wouldn't be building character ;-)


Yess :)
♪♫ Alex
--
UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe


--
Joe Golden 
--

UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe

Re: Matching and Hashes

[Lindsay John Lawrence]

> I could do this in perl, but I wouldn't be building character ;-)

.. 20+yrs ago, I used to say that when using perl instead of some other
language :)

/Lindsay

On Wed, Jan 25, 2017 at 8:47 AM, Alexander Burger 
wrote:

> Hi Joe,
>
> > The T appears to act as a function in your first option. Does that act
> like
> > "If true return the cdr then break out of the for loop"?
>
> Yes, exactly. The 'T' is indeed not a function, but the marker of special
> clauses in the 'for' syntax (but also 'loop' or 'do'). 'NIL' is also
> supported.
>
> The reference of 'for' says, terse as usually:
>
>If a clause has NIL or T as its CAR, the clause's second element is
> evaluated
>as a condition and - if the result is NIL or non-NIL, respectively -
> the prg
>is executed and the result returned.
>
>
> > I could do this in perl, but I wouldn't be building character ;-)
>
> Yess :)
> ♪♫ Alex
> --
> UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe
>

Re: Matching and Hashes

[Alexander Burger]

Hi Joe,

> The T appears to act as a function in your first option. Does that act like
> "If true return the cdr then break out of the for loop"?

Yes, exactly. The 'T' is indeed not a function, but the marker of special
clauses in the 'for' syntax (but also 'loop' or 'do'). 'NIL' is also supported.

The reference of 'for' says, terse as usually:

   If a clause has NIL or T as its CAR, the clause's second element is evaluated
   as a condition and - if the result is NIL or non-NIL, respectively - the prg
   is executed and the result returned.


> I could do this in perl, but I wouldn't be building character ;-)

Yess :)
♪♫ Alex
-- 
UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe

Re: Matching and Hashes

[dean]

I've just found filter (which looks like find ALL) whilst reading up on
find sothank you very much both for the question and answer.









On 25 January 2017 at 07:03, Alexander Burger  wrote:

> Hi Joe,
>
> > (de account-list
> >   ("Bank Charge"."Expenses:Bank Fee") # matches if in
> last position
> >   ("City Market"."Expenses:Groceries")# ONLY this line works to
> match
> > )
> > (de determine-acct (desc)
> >   (for x account-list # go through account list
> >   (when (sub? (car x) desc)
> >   (cdr x  # on match
> return expense category
>
> The problem is that the loops does not exit upon a match.
>
> You could either do
>
>(de determine-acct (Desc)
>   (for X account-list
>  (T (sub? (car X) Desc)
> (cdr X) ) ) )
>
> or use 'find'
>
>(de determine-acct (Desc)
>   (find
>  '((X) (sub? (car X) Desc))
>  account-list ) )
>
> ♪♫ Alex
> --
> UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe
>

Re: In the docs: within or vice versa, more glitches

[Mattias Sundblad]

Hi Jon,

> It seems you forgot something in doc/form/refF.html, line 101. I guess there 
> should have been “Formatting” just before the final “.”

Seems so, added the missing word.

Regards,
Mattias
-- 
UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe

Re: In the docs: within or vice versa, more glitches

[Jon Kleiser]

Hi Mattias,

It seems you forgot something in doc/form/refF.html, line 101. I guess there 
should have been “Formatting” just before the final “.”

/Jon

> On 23. Jan, 2017, at 14:12, Mattias Sundblad  wrote:
> 
> Hi Jon,
> 
>> I’ve found a few more glitches:
> 
> Thanks, I'll go through them and change the files.
> 
> Regards,
> Mattias
> --