|Parameters||val, a value|
|Purpose||Determines if val is a list (and
can therefore be used as a parameter to
|Produces||A truth value: true (|
|Preconditions||Only one parameter (verified).|
> (list? ()) #t > (list? (cons 'a null)) #t > (list? (list 'a 'b 'c)) #t > (list? 'a) #f > (list? cons) #f > (list? 'cons) #f > (list? "cons") #f
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