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vaskaloidis/member_union

Created April 7, 2014 08:03
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member_union
fun member(e, nil) = false
| member(e, h::t) =
if e = h then true
else member(e, t);
fun union(nil, c) = c
| union(a::b,c) =
if member(a, c) then union(b,c)
else a::union(b,c);
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