callable? ( object -- ? )

Vocabulary

quotations

Inputs and outputs

object	an object
?	a boolean

Word description

Tests if the object is an instance of the callable class.

Definition

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

IN: quotations

: callable? ( object -- ? )
    dup tag 4 eq?
    [ drop t ] [
        dup
        tuple?
        [
            layout-of
            7
            slot
            dup
            \ composed
            eq?
            [ drop t ]
            [ \ curried eq? ]
            if
        ]
        [ drop f ]
        if
    ] if ;