| |
| ≢y ←→ ⍬⍴(⍴y),1 |
|
| f⍤r ⊢y |
←→ |
f
on the rank-r cells of y |
| x f⍤(rx,ry) ⊢y |
←→ |
f on the
rank-rx cells of x
and the corresponding
rank-ry cells of y
|
|
| x f⌸ y |
←→ |
Major cells of x specify keys for
corresponding major cells of y , and |
| |
f is applied
to each unique key in x and
the cells of y having that key. |
| f⌸ y |
←→ |
y f⌸ ⍳≢y |
|
|
| x⍳y ←→ (⊂⍤¯1⊢x) ⍳ ⊂⍤(¯1+⍴⍴x)⊢y |
|