What is the role of the IStructuralEquatable interface in C#?

IStructuralEquatable interface defines methods that support comparing objects for structural equality, which means that two objects are equal because they have equal values.

It includes the following two methods-

Sr.No Method & Description 1 Equals(Object, IEqualityComparer)

This method determines whether the object is structurally equal to the current instance.

2 GetHashCode(IEqualityComparer)

Method of the hash code of the current instance.

Let's see an example where I create a Tuple object and use the IstructuralEquatable interface:

Creating a Tuple -

var tupleOne = Tuple.Create(26.3, Double.NaN, 35.6);
var tupleOne = Tuple.Create(26.3, Double.NaN, 35.6);

Equality is now checked by calling IStructuralEquatable.Equals with the default comparator.

IStructuralEquatable chk = tupleOne;
Console.WriteLine(chk.Equals(tupleTwo, EqualityComparer<object>.Default));

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