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Tuple<T1, T2, T3, T4, T5, T6, T7>::IStructuralEquatable::Equals Method

Returns a value that indicates whether the current Tuple<T1, T2, T3, T4, T5, T6, T7> object is equal to a specified object based on a specified comparison method.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

private:
virtual bool Equals(
	Object^ other, 
	IEqualityComparer^ comparer
) sealed = IStructuralEquatable::Equals

Parameters

other
Type: System::Object

The object to compare with this instance.

comparer
Type: System.Collections::IEqualityComparer

An object that defines the method to use to evaluate whether the two objects are equal.

Return Value

Type: System::Boolean
true if the current instance is equal to the specified object; otherwise, false.

Implements

IStructuralEquatable::Equals(Object, IEqualityComparer)

This member is an explicit interface member implementation. It can be used only when the Tuple<T1, T2, T3, T4, T5, T6, T7> instance is cast to an IStructuralEquatable interface.

The IEqualityComparer::Equals implementation is called only if other is not nullptr, and if it can be successfully cast (in C#) or converted (in Visual Basic) to a Tuple<T1, T2, T3, T4, T5, T6, T7> object whose components are of the same types as the current instance. The IStructuralEquatable::Equals(Object, IEqualityComparer) method first passes the Item1 values of the Tuple<T1, T2, T3, T4, T5, T6, T7> objects to be compared to the IEqualityComparer::Equals implementation. If this method call returns true, the method is called again and passed the Item2 values of the two Tuple<T1, T2, T3, T4, T5, T6, T7> objects. This continues until the method call returns false when it compares a specific pair of Item values, or the two Item7 values are passed to the method.

The following example defines a RateComparer class that performs a custom test for equality. If the values that are passed to its IStructuralEquatable::Equals method are of type Single or Double, the method tests for equality by using only up to three fractional digits. Otherwise, it simply calls the x parameter's Equals method. The example uses this IEqualityComparer implementation to determine whether four Tuple<T1, T2, T3, T4, T5, T6, T7> objects that contain data on the rate of population change between 1950 and 2000 are equal.

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 4.6, 4.5, 4

.NET Framework Client Profile

Supported in: 4

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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