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no title added by logothesia on Sat Dec 16 21:22:35 2023

#;1323> (alist-ref 'foo alist)
bar
#;1347> (alist-ref 'xyzzy alist)
#f
#;1356> (alist-ref 'plugh alist)
#f
#;1362> (cond ((alist-ref 'foo alist) => (lambda (val) 'yea)) (else 'nay))
yea
#;1443> (cond ((alist-ref 'xyzzy alist) => (lambda (val) 'yea)) (else 'nay))
nay
#;1449> (cond ((alist-ref 'plugh alist) => (lambda (val) 'yea)) (else 'nay))
nay
#;1456>
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What's the one-argument procedure to check if a list is empty?
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