< > BotCompany Repo | #1010208 // enumerateIntegers - returns 0, 1, -1, 2, -2, ...

JavaX fragment (include)

static IterableIterator<int> enumerateIntegers() {
  ret iteratorFromFunction(new O {
    long i = 1;
    
    Int get() {
      if (i > Integer.MAX_VALUE*2L) null;
      int result = (int) (odd(i) ? -i/2 : i/2);
      ++i;
      ret result;
    }
  });
}

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