Porting Common Lisp Top Variable Index
assoc-if
assoc-if-not
count-if
count-if-not
delete-if
delete-if-not
find-if
find-if-not
member-if
member-if-not
nsubst-if
nsubst-if-not
nsubstitute-if
nsubstitute-if-not
position-if
position-if-not
rassoc-if
rassoc-if-not
remove-if
remove-if-not
subst-if
subst-if-not
substitute-if
substitute-if-not