Vocabulary
kernel

Inputs and outputs

slots...	slot values
class	a tuple-class
tuple	a tuple

Word description
Creates a new instance of class and fill in the slots from the stack, with the top-most stack element being stored in the right-most slot.

Notes
The name boa is shorthand for “by order of arguments”, and “BOA constructor” is a pun on “boa constrictor”.

Errors
Throws an error if the slot values do not match class declarations on slots (see Tuple slot declarations).

Definition

IN: kernel

GENERIC: boa ( slots... class -- tuple )

Methods

USING: classes.tuple classes.tuple.private kernel words ;

M: tuple-class boa
[ "boa-check" word-prop [ call ] when* ] [ tuple-layout ]
bi <tuple-boa> ;