/// <summary>
/// Indicates whether some other object is "equal to" this OptionalInt. The
/// other object is considered equal if:
/// <ul>
/// <li>it is also an {@code OptionalInt} and;
/// <li>both instances have no value present or;
/// <li>the present values are "equal to" each other via {@code ==}.
/// </ul>
/// </summary>
/// <param name="obj"> an object to be tested for equality </param>
/// <returns> {code true} if the other object is "equal to" this object
/// otherwise {@code false} </returns>
public override bool Equals(Object obj)
{
if (this == obj)
{
return(true);
}
if (!(obj is OptionalInt))
{
return(false);
}
OptionalInt other = (OptionalInt)obj;
return((IsPresent && other.IsPresent) ? Value == other.Value : IsPresent == other.IsPresent);
}
/// <summary>
/// Constructs a {@code TerminalOp} for streams of ints.
/// </summary>
/// <param name="mustFindFirst"> whether the {@code TerminalOp} must produce the
/// first element in the encounter order </param>
/// <returns> a {@code TerminalOp} implementing the find operation </returns>
public static TerminalOp <Integer, OptionalInt> MakeInt(bool mustFindFirst)
{
return(new FindOp <>(mustFindFirst, StreamShape.INT_VALUE, OptionalInt.Empty(), OptionalInt::isPresent, FindSink.OfInt::new));
}
