|Parameters||b1 ... bn, n Boolean values|
|Purpose||Determines if all the values are true.|
|Produces||A truth value: true (|
|Preconditions||All the parameters are Boolean values (unverified).|
> (and #t #t #t) #t > (and (< 1 2) (< 2 3)) #t > (and (odd? 1) (odd? 3) (odd? 5) (odd? 6)) #f > (and) #t
|Parameters||exp1 ... expn, n expressions|
|Purpose||Evaluates expressions one-by-one until it reaches the end or false.|
|Produces||The value of one of the expressions.
Returns false (|
|Postconditions||Evalutes each of the expressions up to (and including) the first one that returns false. If all of the expressions return a non-false value, evaluates all of the expressions.|
> (and "hello" "goodbye") "goodbye" > (and (display "Blah") (newline) "goodbye") Blah "goodbye" > (and (display "Blah") #f (display "Blech")) Blah #f
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