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gf-core/doc/tutorial/Foods.gf
2005-12-19 16:31:40 +00:00

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abstract Foods = {
cat
S ; Item ; Kind ; Quality ;
fun
Is : Item -> Quality -> S ;
This, That, These, Those : Kind -> Item ;
QKind : Quality -> Kind -> Kind ;
Wine, Cheese, Fish, Pizza : Kind ;
Very : Quality -> Quality ;
Fresh, Warm, Italian, Expensive, Delicious, Boring : Quality ;
}