No, the line has to look exactly like what I showed, with nothing else
added to the sentence. No assignments, no parentheses, no other verbs.
Henry Rich
On 5/6/2016 8:13 PM, Louis de Forcrand wrote:
I see. So here the special code is implemented?
1e2 timespacex 'a=: c}a,:d=: a%b [ c=:
I see. So here the special code is implemented?
1e2 timespacex 'a=: c}a,:d=: a%b [ c=: 0 ~: b=: ?1e6#5 [ a=: ?1e6#5'
0.103524 6.71141e7
If I take the random generators out of the timer, then it is
slightly faster and less space-hungry than the my previous
expression:
a=: ?1e6#5
b=: ?1e6
(Unicode APL chars in this message! and a spoiler if you haven't yet
found the solution!)
I love showing off the APL (from the original book) solution for this
to people who have heard nothing of array-based languages:
V +.× ∊ ∨.= N ∘.| V
which finds the sum of the numbers in the vector V whi
See
http://code.jsoftware.com/wiki/Vocabulary/SpecialCombinations#Assignments_In_Place_.28AIP.29
a=: (b~:0)}a,:a%b
is not in-place because it doesn't match the template. In fact, it isn't
handled by special code at all, see
http://code.jsoftware.com/wiki/Vocabulary/SpecialCombinations#Select
(0 = {:)`(%/ ,: {.)}@,:
is another solution.
It has the same effect as
([ * 0 = ]) + % * 0 ~: ]
or
%^:(~:&0)"0
in that it keeps the original number instead of
replacing it by 0. As a side-note, I was
surprised not to find special code associated
with v1`v2}, especially if v2 has the form
u ,: v. An
"0 1 vs / is just fine.
I recommend thinking in a fork only model for starting tacit code because a
single model all powerful model is easier to apply, and other forms (hook, &)
are mere shortcuts.
similarly, "0 1 (or I think more accurately "_1 _) is a good way to understand
rank better.
Als
Somewhere in the essay archives http://code.jsoftware.com/wiki/Essays it
is written that (as I recall) Ken & Roger, upon realizing that rank
could do the work of table as you have discovered, were disappointed to
wasted a good symbol on table.
Date: Fri, 6 May 2016 12:03:15 -0400
From: Geoff
On Fri, May 6, 2016 at 4:43 AM, Martin Kreuzer wrote:
> At that stage I realized that (/) isn't only "Insert" but also used to
> force a "Table":
>
Yep, this was new to me as well, as evidenced by my original awkward |"0 1
construction.
--
A1:
This does what I think you want:
(,2) (0 +./ .= (|/ i.)) 10
1 0 1 0 1 0 1 0 1 0
I think it's reasonable to expect that the left argument always be a
list (aka "a vector"). But, if you like, you could wrap this in code
that guarantees vectorness. Since the rank of the right argument
doesn'
x%y+y=0
Den 3:37 fredag den 6. maj 2016 skrev Joe Bogner :
> > On 6 May 2016, at 10:53 AM, 'Pascal Jasmin' via Programming <
> programm...@jsoftware.com> wrote:
> >
> > I would go with first version. What don't you like about it?
Thanks - I don't particularly like using explicit rank
In the effort of generalizing it more, I noticed that
(3 5) (0 +./ .= (|/ i.)) 10
1 0 0 1 0 1 1 0 0 1
works fine, but collapses when only on divider is given
(2) (0 +./ .= (|/ i.)) 10
1
(looks like the resulting vector being ORed).
Q1:
Is there a possible twist to bring these two cases
Let me add that, following this thread so far, I too learned a few
things today - and pardon me for outlining the steps for further reference.
I (again) did a very base level approach:
3 + 8 9 10
11 12 13
5 + 8 9 10
13 14 15
3 5 + 8 9 10
|length error
| 3 5+8 9 10
At that stage
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