?offset-of-slot ( name tuple -- n/f )

Vocabulary

classes.tuple

Inputs

name	a string
tuple	a tuple

Outputs

n/f	an integer or f

Word description

Returns the offset of a tuple slot accessed by name, or f if no slot with that name.

Definition

USING: accessors classes kernel slots ;

IN: classes.tuple

: ?offset-of-slot ( name tuple -- n/f )
    class-of all-slots slot-named [ offset>> ] [ f ] if* ;