< > BotCompany Repo | #1027088 // predicateToSet - make a pseudo-set only implementing contains()

JavaX fragment (include) [tags: use-pretranspiled]

Libraryless. Click here for Pure Java version (2173L/14K).

static <A> Set<A> predicateToSet(IPred<A> p) {
  ret p == null ? null : new AbstractSet<A> {
    public Iterator<A> iterator() { throw unimplemented(); }
    public int size() { ret -1; }
    @Override
    public bool contains(O o) { ret p.get((A) o); }
  };
}

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