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