Raul,
You have a newer beta than I do? Is there no end to your wizardry!
But, I see the same thing now that I am updated to the commercial version of
j806
JVERSION
Engine: j806/j64/darwin
Release: commercial/2017-11-06T10:20:33
Library: 8.06.09
Platform: Darwin 64
Installer: J806 install
InstallPath: /users/bobtherriault/j64-806
Contact: www.jsoftware.com
numeric=: 0 = 0 {.@{. ,
numeric 4+0 $.i.3
0
numericM=: monad : '0 -: 0{ , 1{. 0#y'
numericM 4+0 $.i.3
0
But then I noticed something that I hadn't known about sparse arrays and their
sparse characters
numeric 0 $. 4 + i.3
1
numericM 0 $. 4 + i.3
1
3 $. 0 $. 4 + i.3 NB. Sparse character displayed using 3 $. y is 0 after
sparse array is first created
0
3 $. 3 + 0 $. 4 + i.3 NB. Sparse character changes if entire array is
changed later
3
(0 # ,) 3 + 0 $. 4 + i.3 NB. Empty
{: (0 # ,) 3 + 0 $. 4 + i.3 NB. result comes from updated sparse character
3
I think that this is what breaks numeric and numericM, but there is always more
to know
s=: (0 # ,) 3 + 0 $. 4 + i.3
s NB. Empty array
{:s NB. now we know the 3 comes from the sparse character
3
(1,{:) s NB. makes sense
1 3
(1,{.) s NB. turns out first of empty is sparse character as well
1 3
s -: 0$0 NB. s is empty, right?
1
((0$0),{.) s NB. empty and integer is list
3
(s,{.) s NB. this displays like 0 $ 0
$(s,{.) s NB. but has a shape of 1
1
It turns out it this is what an empty sparse array looks like. It has zero
non-sparse entries.
Cheers, bob
> On Nov 9, 2017, at 12:56 PM, Raul Miller <[email protected]> wrote:
>
> I'm using Beta-7, where you are using Beta-6.
>
> That might be the issue?
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