[Jprogramming] Head, (Behead, ) Open to get an array produces surprise lead unit axis

[Henry Rich]

}. d is a singleton list, and its shape is the frame of > . If you know 
you want only the second atom, use 1 { d.

1 {:: d is the fastest way to open the second box of d, and ((1;0) {:: 
d) the fastest way to do what you want here.

On 3/24/2019 10:50 AM, Brian Schott wrote:
> I want the first result below to be (shape) 3 2 6, not 1 3 2 6 .
> I am surprised because the last result below shows that the leaf I desire
> has the desired shape, 3 2 6.
>
> Short of using Takes instead of the Head, I would like to produce the
> desired result by only messing with the middle tine in the fork. That is,
> in `b ([ (xxx) }.@])d`, I want only the xxx=:>@{.@>@] )}.@] altered.
>
> Can you explain or remedy the problem?
>
> (NB. line wrap problem below)
>
>     $b([(>@{.@>@] )}.@]) d
> 1 3 2 6
>     d
> ┌─────────────┬─────────────────────────────┐
> │┌─────┬─────┐│┌──────────────────┬────────┐│
> ││10  8│10 10│││ 7 _8 _4  _8  1  1│10 10 10││
> ││ 1 _7│     │││_8  1  8 _10 _7 _2│        ││
> ││     │     │││                  │        ││
> ││ 2 _7│     │││ 5 _5  3   2  1  2│        ││
> ││_1 10│     │││_7 _4 _1  _2 _2 _1│        ││
> │└─────┴─────┘││                  │        ││
> │             ││_9 _8  8   9  3 _5│        ││
> │             ││_4 _2  7   7  5 _2│        ││
> │             │└──────────────────┴────────┘│
> └─────────────┴─────────────────────────────┘
>     5!:5<'d'
> (<(2 2 2$10 8 1 _7 2 _7 _1 10);10 10),<(3 2 6$7 _8 _4 _8 1 1 _8 1 8 _10 _7
> _2 5 _5 3 2 1 2 _7 _4 _1 _2 _2 _1 _9 _8 8 9 3 _5 _4 _2 7 7 5 _2);10 10 10
>     $L: 0 d
> ┌─────────┬─────────┐
> │┌─────┬─┐│┌─────┬─┐│
> ││2 2 2│2│││3 2 6│3││
> │└─────┴─┘│└─────┴─┘│
> └─────────┴─────────┘
>
>


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