Structuring of Arrays

A class of primitive functions re-structures arrays in some way. Arrays may be input only in scalar or vector form. Structural functions may produce arrays with a higher rank. The Structural functions are reshape (⍴), ravel, laminate and catenate (,), reverse and rotate (⌽), transpose (⍉), mix and take (↑), split and drop (↓), enlist (∊), and enclose (⊂).

Examples

      2 2⍴1 2 3 4
1 2
3 4

      2 2 4⍴'ABCDEFGHIJKLMNOP'
ABCD
EFGH

IJKL
MNOP
         ↓2 4⍴'COWSHENS'
 COWS  HENS