Please elaborate on what confused you in that article.  [May I say, if you want to learn about x u/ y, there's much more information on the page for that primitive rather than the page for {y ].

The inner verb rank of u/ DOES matter.  It's crucial.  Please read the page on x u/ y and then tell me if you still think the docs need more work.

Henry Rich

On 12/2/2017 3:07 PM, Joe Bogner wrote:
Thanks Henry & Raul - I figured it was rank but couldn't figure out why. I
guess I assumed it would somehow use the rank of the tines.

This NuVoc article is what tripped me up -
http://code.jsoftware.com/wiki/Vocabulary/curlylf

Specifically this example got me thinking that the 'inner' verb rank
mattered, but it was just my misread of the parentheses (there is no inner
verb!)

0 1 (<@,"0)/ 7 8 9

vs

  0 1 (<@,)"0/ 7 8 9

vs

0 1 <@,"0/ 7 8 9

all are the same, but it doesn't mean that placing rank inside the verb for
the / adverb matters. Sharing in case it helps someone else...

Thanks again

On Sat, Dec 2, 2017 at 2:39 PM, Henry Rich <[email protected]> wrote:

Rank.

    (~: *. (0&= @ |~)) b. 0
_ _ _
    (0&= @ |~) b. 0
_ 0 0
    ~: b. 0
_ 0 0

Henry Rich



On 12/2/2017 2:34 PM, Joe Bogner wrote:

I was working on my adventofcode solution earlier today and was stuck and
still can't figure out why this doesn't work.

Take this expression.

(0&= @ |~)/~ 5 9 2 8

1 0 0 0

0 1 0 0

0 0 1 0

0 0 1 1


And this expression


(~:)/~ 5 9 2 8

0 1 1 1

1 0 1 1

1 1 0 1

1 1 1 0


Why can't I combine it into a single fork to AND the two tines?


(~: *. (0&= @ |~))/~ 5 9 2 8

0 0 0 0



Instead I have to do this


(~:/~ *. (0&= @ |~)/~) 5 9 2 8

0 0 0 0

0 0 0 0

0 0 0 0

0 0 1 0
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