⌝
X g⌝Y applies g to every pair. Result shape: (⍴X),⍴Y.
X g⌝Y
g
(⍴X),⍴Y
1 2+⌝10 20 ⍝ 2 2⍴11 21 12 22 (⍳3)=⌝⍳3 ⍝ 3 3⍴1x 0x 0x 0x 1x 0x 0x 0x 1x
Array-valued pair results remain nested. See inner product.