| array | ⊢ | ∘., | ⊂⍬ |
| |||
| shape | ⍴ | , | ⍬ | 3 2 | |||
| bound | ×/⍴ | × | 1 | 6 | |||
| tally | ≢ | ⊣ | ? | 3 | |||
| rank | ≢⍴ | + | 0 | 2 |