Am Sonntag, 10. Februar 2013, 21:22:23 schrieb Alan Manuel Gloria: > Okay, I checked, and I'm not sure how you propose to handle curly-infix. > > It seems, according to your examples, that a line composed of a single > curly-infix item is that item, not a list of that item.
I rather see curly infix as rewriting the expression:
{n-1 + n-2}
to
+ n-1 n-2
but that only works at the beginning of a line. Deeper in the line, it has to
become the corresponding s-expression…
> So: can you be more clear about how your indentation-based syntax
> interacts with the n-expression stack?
That was a part I wasn’t perfectly sure about when I wrote - and which I could
not fix before sending, because I wrote late at night and knew that I would not
have time to improve it the next few days.
Conceptually:
- neoteric at the beginning of a line is hard to do right
(it would always be a double bracket).
- neoteric within a line, or in a line which starts with .
would just be the corresponding s-expression.
- curly-infix would just be the s-expression - except if
the whole line is curly-infix. I don’t like that exception…
maybe the line with only curly infix should just be prefixed
with a ..
define : fibup maxnum count n-1 n-2
if {maxnum = count}
. {n-1 + n-2}
fibup maxnum {count + 1} {n-1 + n-2} n-1
The : is just a shortcut for starting a new line at the indentation of the :. So
define : fibfast n
if {n < 2}
. n
fibup n 2 1 0
could be written as
define
fibfast n
if {n < 2}
. n
fibup n 2 1 0
And : . does not change the meaning of the code:
a b : . c d
is the same as
a b c d
but it sets an indentation level, so in the following, the second line would
have higher indentation than a dotted line:
a b : . c
d
is the same as
a b
. c
d
which would be dangerous, because the . actually reduces the indentation of the
line by one and d gets a doubled indentation which is not marked and would be
quite confusing.
Best wishes,
Arne
--
Ein Würfel System - einfach saubere Regeln:
- http://1w6.org
signature.asc
Description: This is a digitally signed message part.
------------------------------------------------------------------------------ Free Next-Gen Firewall Hardware Offer Buy your Sophos next-gen firewall before the end March 2013 and get the hardware for free! Learn more. http://p.sf.net/sfu/sophos-d2d-feb
_______________________________________________ Readable-discuss mailing list Readable-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/readable-discuss
