# `≢` — Tally / Not match

Function. Keys: `Alt-= /`. Ranks: `∞` monadic, `∞ ∞` dyadic

`≢Y` counts major cells: first-axis length, or 1 for a unit.

``` bpl
≢2 3⍴0             ⍝ 2ₓ
≢42                ⍝ 1ₓ
≢⍬                 ⍝ 0ₓ
```

`X≢Y` negates [match](equal-underbar.qmd).

``` bpl
1≢,1               ⍝ $t
```