Handbook
Glossary
?peek-front ( deque -- obj/f )
Vocabulary
deques
Inputs
deque
a
deque
Outputs
obj/f
an
object
or
f
Word description
A forgiving version of
peek-front
. If the deque is empty, returns
f
.
Definition
USING:
kernel
;
IN:
deques
:
?peek-front
( deque -- obj/f )
peek-front*
and*
;
inline