C# IStructuralEquatable Nasıl kullanılır Ile ilgili detaylı notlar

C# IStructuralEquatable Nasıl kullanılır Ile ilgili detaylı notlar

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comparer IEqualityComparer An object that determines whether the current instance and other are equal.

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Other types which implement structural equality/comparability include tuples and anonymous types - which both clearly benefit from the ability to perform comparison based on their structure and content. A question you didn't ask is:

Equals and object.ReferenceEquals. Equals is meant to be overridden for whatever sort of comparison makes the most sense for a given type, whereas ReferenceEquals emanet't be overridden and always compares by reference.

This code technically works, but is sort of a hot mess and is hamiş really maintainable. Anyone using the library would have to write this code kakım well. The next logical step would be to just use .Equals on the entire metrics.

Your concern is that Object.GetHashCode() does hamiş provide values that are stable and the concern is very valid bey yaşama be seen in the first box headed by Caution in the documentation:

What does IEquatable buy you, exactly? The only reason I emanet see it being useful is when creating a generic type and forcing users to implement and write a good equals method.

In my implementation I delegated the task of calculating hash codes to the internal array. While testing it, to my great surprise, I found that my two different arrays had the same structural hash code

(doesn't violate documentation), but it is clearly hamiş as good as it would be if 0 were replaced with i. Also there's no reason to loop if the code were just going to use a single value from the array.

In addition to this awesome blog Frank and I also dicussed all of this awesome in detail on Merge Conflict on episode 111:

C# IStructuralComparable Determines whether the current collection object precedes, occurs in the same position birli, or follows another object in the sort order.

Defines methods to support the C# IStructuralEquatable Kullanımı comparison of objects for structural equality. Structural equality means that two objects are equal because they have equal values.

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