<PackageReference Include="System.ValueTuple" Version="4.5.0-rc1" />

System.ValueTuple<T1, T2>

Represents a 2-tuple, or pair, as a value type.
public T1 Item1

The current ValueTuple<T, U> instance's first component.

public T2 Item2

The current ValueTuple<T, U> instance's second component.

public ValueTuple(T1 item1, T2 item2)

Initializes a new instance of the ValueTuple<T, U> value type.

public int CompareTo(ValueTuple<T1, T2> other)

Compares this instance to a specified instance and returns an indication of their relative values.

public bool Equals(ValueTuple<T1, T2> other)

Returns a value that indicates whether the current ValueTuple<T, U> instance is equal to a specified ValueTuple<T, U>.