Jot is a Dyadic operator

Operator Jot means

Beside or Bind

Beside (function composition)

      ⌽∘⍳¨ 3 4 5
┌─────┬───────┬─────────┐
│3 2 1│4 3 2 1│5 4 3 2 1│
└─────┴───────┴─────────┘

      ¯1 ⌽∘⍳¨ 3 4 5
┌─────┬───────┬─────────┐
│3 1 2│4 1 2 3│5 1 2 3 4│
└─────┴───────┴─────────┘

      +∘÷/ 40⍴1    ⍝ continued fraction
1.61803

Bind (left and right argument currying)

      next ← 1∘+
      next 23
24
      prev ← -∘1
      prev 23
22

N.B. Jot is also used in conjunction with Dot to mean Outer Product.

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