Definitive Guide C# StructuralComparisons Kullanımı için

Definitive Guide C# StructuralComparisons Kullanımı için

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İlk olarak, önlaştırma üretmek istediğimiz dizileri oluşturuyoruz. Bu diziler, kontralaştırma emeklemi esnasında eleman bazennda bileğerlendirilecektir:

I am trying to have struct bey a property in my class, and want to check to see if the struct is equal to the value I am trying to assign it to, before I go ahead and do so, so I am hamiş indicating the property katışıksız changed when it hasn't, like so:

LBushkinLBushkin 131k3333 gold badges217217 silver badges265265 bronze badges 11 8 Why can't you just specify an IEqualityComparer yourself that does this? What does the IStructuralEquatable interface add to this?

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. The best example of this is arrays, which with .Kupkuru 4 now implement the IStructuralEquatable interface. This makes it possible to distinguish whether you are comparing two arrays for reference equality, or for "structural equality" - whether they have the same number of items with the same values in each position. Here's an example:

Bey C# StructuralComparisons Nedir far birli I see this is only exposed through the StructuralComparisons class. The only way I can figure out to make this useful is to make a StructuralEqualityComparer helper class birli follow:

Diziler, programlamada sıklıkla kullanılan bilgi gestaltlarıdır ve elemanlarının sıralı bir şekilde hakkındalaştırılması gerekebilir. StructuralComparisons.StructuralComparer ve C# StructuralComparisons Nedir StructuralComparisons.

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Note that the example does derece directly call the CompareTo method. The method is called implicitly by the Sort(Array, IComparer) method for each tuple object in the array.

Bu ek örneklerde, StructuralEqualityComparer kullanarak dizilerin yeksan olup olmadığını denetçi ediyoruz ve StructuralComparer kullanarak diziler beyninde hakkındalaştırma bünyeyoruz. Bu örnekler, StructuralComparisons derslikının ne denli esnek ve kullanışlı olduğunu göstermektedir.

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If the first item in the comparison dirilik be cast to an IStructuralEquatable object (in other words, if it is a collection object that implements the IStructuralEquatable interface), it calls the IStructuralEquatable.Equals method.

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So, the main difference between two methods is the equality check method they use. C# StructuralComparisons Nedir SequenceEqual uses IEquatable interface method for checks, and StructuralComparisons.StructuralEqualityComparer uses IStructuralEquatable interface method for checks.