APL2's Disclose (Dyalog calls it Mix) will convert a vector of vectors into a matrix:
⊃'timor' 'mortis'
┌→─────┐
↓timor │
│mortis│
└──────┘
Your second application of Disclose is applied to a 1-vector of
1-vectors (,⊂,7), so it returns a 1x1 matrix.
Jay.
On 12 May 2014 06:03, Blake McBride <[email protected]> wrote:
> ⊃⊃⊂,⊂,7
> ┌→┐
> ↓7│
> └─┘
> ⍴⊃⊃⊂,⊂,7
> ┌→──┐
> │1 1│
> └───┘
>
