tag ( object -- n )
Factor handbook » The implementation » VM memory layouts » Type numbers

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type>class ( n -- class )

Vocabulary
kernel.private

Inputs

object

an object

Outputs

n	a tag number

Word description
Outputs an object's tag number, between zero and one less than num-types. This is implementation detail and user code should call class-of instead.

Definition

IN: kernel.private

PRIMITIVE: tag ( object -- n ) foldable flushable