zl:1 - FTP

andom-state-p 422
random-state-p object Function
This predicate is true if the argument is an object of type random-state; it
is false otherwise.
Examples:
(setq x (make-random-state» => #.(RANDOM-STATE 71 1695486379 ... )
(setq copy-x (make-random-state x» => #.(RANDOM-STATE 71 ...)
(random-state-p x) => T
(random-state-p copy-x) => T
(random-state-p *random-state*) => T ;always true
(random-state-p (random 18» => NIL
For a table of related items: See the section "Random Number Functions"
in Symbolics Common Lisp: Language Concepts.
I
zl:rass predicate item alist Function
(zl:rass item alist) looks up item in the association list (list of conses) alist.
The value is the flrst cons whose cdr matches x according to predicate, or
nil if there is none such. See the function zl:mem, page 345. As with
zl:mem, you can use noncommutative predicates; the flrst argument to the
predicate is item and the second is the cdr of the element of alist.
For a table of related items: See the section "Functions That Operate on
Association Lists" in Symbolics Common Lisp: Language Concepts.
rassoc item a-list &key (test #'eql) test-not (key #'identity) Function
rassoc searches the association list a-list. The value returned is the fIrst
pair in a-list such that the cdr of the pair satisfles the predicate specifIed
by :test, or nil if there is no such pair in a-list. rassoc is the reverse form
of assoc. The keywords are:
:test
:test-not
: key
Any predicate specifying a binary operation to be applied
to a supplied argument and an element of a target list.
The item matches the specifIcation only if the predicate
returns t. If :test is not supplied the default operation is
eql.
Similar to :test, except the item matches the specifIcation
only if there is an element of the list for which the
predicate returns nil.
If not nil, should be a function of one argument that will
extract from an element the part to be tested in place of
the whole element.
If a-list is considered to be a mapping, then rassoc treats the a-list as
representing the inverse mapping. For example: