| http://www.w3.org/ns/prov#value | - Using function blocks, which are evaluated only when they are invoked, one can emulate almost any language construct, including while, if, etc..Existential typesExistential types are roughly an alternative to Java wildcards, only more powerful.Martin Odersky: If Java had reified types and no raw types or wildcards, I do not think we would have that much use for existential types and I doubt they wo
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