IsSquare

Tests if a two-dimensional container is square.

Syntax

IsSquare(X) returns true iff width(X) = height(X).

A ≔ ❨❨5, 1, 2❩, ❨4, 7, 5❩, ❨0, 2, 1❩❩

⎛5  1  2⎞
⎜4  7  5⎟
⎝0  2  1⎠

B ≔ ❨❨4, 7, 6❩❩

(4  7  6)

C ≔ ❨❨1❩, ❨2❩, ❨7❩❩

⎛1⎞
⎜2⎟
⎝7⎠

bm ≔ ComputePixmap(200, 200, x, y, rgb(x/199, y/199, 0.5))

A pixmap of size 200×200.

'(IsSquare(A), IsSquare(B), IsSquare(C), IsSquare(bm))

true
false
false
true