offset-of-slot ( name tuple -- n )

Vocabulary

classes.tuple

Inputs

name	a string
tuple	a tuple

Outputs

n	an integer

Word description

Returns the offset of a tuple slot accessed by name.

Errors

Throws a no-slot error if no slot with that name.

Definition

USING: kernel ;

IN: classes.tuple

: offset-of-slot ( name tuple -- n )
    2dup ?offset-of-slot [ 2nip ] [ no-slot ] if* ;