zero-square-matrix? ( object -- ? )
Matrix operations

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Vocabulary
math.matrices

Inputs and outputs

object	an object
?	a boolean

Word description
Tests if the object is an instance of the zero-square-matrix class.

Definition

USING: combinators.short-circuit kernel ;

IN: math.matrices

: zero-square-matrix? ( object -- ? )
    dup square-matrix?
    [ { [ zero-matrix? ] [ square-matrix? ] } 1&& ] [ drop f ]
    if ;