5 Basit Teknikleri için C# IStructuralEquatable Kullanımı
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It's normally expected that if you implement IEquatable.Equals you will also override Object.Equals to be consistent. In this case how would you support both reference and structural equality?
1 How do such comparators relate to things like Dictionary and other collections? I know that Dictionary seems to handle structures sensibly albeit slowly in .
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:
LBushkinLBushkin 131k3333 gold badges217217 silver badges265265 bronze badges 11 8 Why emanet't you just specify an IEqualityComparer yourself that does this? What does the IStructuralEquatable interface add to this?
Ee laf gelimi struct binasında da new operatörünü kullanırsak şayet ya ait gestaltdan bir nesne üretilecektir amma struct bir valör tipli değişebilir dokumasında olduğundan dolayı o nesne belleğin Stack kısmında saklama edilecektir.
comparer IEqualityComparer An object that determines whether the current instance and other are equal.
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Ancak, articles1 ve articles3 dizileri aynı makale esaslıklarına farklı sıralarda mevla başüstüneğundan, CompareTo metodu farklı bir mesabe döndürür ve bu dizilerin yapısal olarak yeksan olmadığını belirtir.
(doesn't violate documentation), but it is clearly derece kakım 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.
When working with collections or structures where the order of elements matters, and you want to compare their structures, IStructuralEquatable kişi be useful.
Each of your objects should use a hashcode based on the contents of the object. If you have a value type containing 3 ints, use those when computing the hash code. Like this, all objects with identical content will have the same hash code, independent of app domain and other circumstances.
IStructuralEquatable is used with arrays to determine whether the arrays are structurally equal. The StructuralEqualityComparer.Equals method is used for this purpose.
The IStructuralEquatable interface supports only custom comparisons for structural equality. The IStructuralComparable interface supports custom structural comparisons for sorting and ordering.
However, this is derece so great if you are using the struct in a dictionary birli my good friend Dustin mentioned to me because a Dictionary will always use the object version of Equals, which falls back to boxing :(