Your argument is unconvincing to me.
J generally processes right to left: agreed.
J has a principle for deciding which argument of a verb should be on the
left: the more 'control-like' argument. The right argument is more
'data-like'. You apply the control argument to the data.
Thus, (x | y) is the remainder after dividing by x, and (x u^:n y)
applies x&u to y, n times (and if n=0 you get y).
The point is that order of arguments comes from a different principle
than order of execution, and you should expect the order of arguments to
be the same regardless of the direction of the fold.
Henry Rich
On 2/21/2021 1:52 PM, 'Sergey' via Programming wrote:
Hi!
I am glad that in version 9.02 verbs are now executed from right to left,
which corresponds to the logic of J.
However, in my opinion, the order of passing arguments to the right
verb (see_arg in my example)
also needs to be changed for the logic of J.
see_arg =: dyad : 0
NB. See argument order
echo x, y
x + y
)
Today:
7 ] F:. see_arg 1 2 3 4
1 7
2 8
3 10
4 13
8 10 13 17
The proposed order is more logical: left ini value goes to left
argument and right array values going to right argument of verb:
7 ] F:. see_arg 1 2 3 4
7 1
8 2
10 3
13 4
8 10 13 17
Sergey.
On Sun, 21 Feb 2021 07:28:44 -0600, Julian Fondren
<[email protected]> wrote:
There's " https://code.jsoftware.com/wiki/Vocabulary/quotem
Common use #2, to make a constant verb out of a noun.
(_."_)`2:`3:@.] i:2
2 3 _. 2 3
Hi Julian,
thanks for the hint! This does exactly what I was looking for.
Regards,
Thomas
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