sclass FloatBool implements IPair<Float, Bool> {
  float f;
  bool b;
  
  *() {}
  *(float *f, bool *b) {}
  
  toString { ret f + "/" + b; }
  
  public int hashCode() {
    ret boostHashCombine(hashOfFloat(f), hashOfBool(b));
  }
  
  public bool equals(O o) {
    ret o instanceof FloatBool
      && f == o/FloatBool.f
      && b == o/FloatBool.b;
  }
  
  public Float a() { ret f; }
  public Bool b() { ret b; }
}