Handbook
Glossary
usage-error? ( object -- ? )
Vocabulary
command-line
.
parser
.
private
Inputs and outputs
object
an
object
?
a
boolean
Word description
Tests if the object is an instance of the
usage-error
class.
Definition
USING:
classes.tuple.private
;
IN:
command-line.parser.private
:
usage-error?
( object -- ? )
\
usage-error
9
tuple-instance?
;