Quad Equal ⌸
Quad Equal is a Monadic operator with an ambivalent
operand
Operator Quad Equal means
'Banana' {⍺ ⍵}⌸ 3 1 4 1 5 9
┌─┬─────┐
│B│3 │
├─┼─────┤
│a│1 1 9│
├─┼─────┤
│n│4 5 │
└─┴─────┘
'Banana' {⍺,+/⍵}⌸ 3 1 4 1 5 9
B 3
a 11
n 9
'Banana' {⍺ ⍵}⌸ 1 2 3 4 5 6
┌─┬─────┐
│B│1 │
├─┼─────┤
│a│2 4 6│
├─┼─────┤
│n│3 5 │
└─┴─────┘
{⍺ ⍵}⌸ 'Banana' ⍝ (same as above)
┌─┬─────┐
│B│1 │
├─┼─────┤
│a│2 4 6│
├─┼─────┤
│n│3 5 │
└─┴─────┘