2 Dakika Kural için C# StructuralComparisons Nedir

2 Dakika Kural için C# StructuralComparisons Nedir

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Programlama dillerinde en mühim OOP(Object Oriented Programing) örgülarından olan class gestaltsına bakarak daha cılız düzeyde emeklemler gerçekleştirmemizi sağlayan ve belirli bir posta kısıtlamaları indinde çitndıran struct yapısını C# diline özel ele alacağız.

I am trying to have struct kakım 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 derece indicating the property özgü changed when it hasn't, like so:

g. it would perhaps use the depth of the trees birli a way to order them.) I'll try to draw an example picture of this but I suspect someone may already have one and will post it before I have the chance.

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. The best example of this is arrays, which with .NET 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:

However, you do derece call the CompareTo method directly in most cases. Instead, the CompareTo method is called by sorting methods such kakım Sort(Array, IComparer). In this case, you define your IComparer implementation and pass it as an argument to a sorting method or collection object's class constructor. The CompareTo method with your custom comparer is then called automatically whenever the collection is sorted.

Being able to specify IStructuralEquatable/IStructuralComparable in such cases is actually useful. It would also be inconvenient to pass a TupleComparer or ArrayComparer everywhere you want to apply this type of comparison. The two approaches are not mutually exclusive.

The actual comparison of the members or elements in the current instance with those in a second object is performed by an IComparer interface implementation, which contains the definition of your custom comparison.

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The interface saf a single member, CompareTo, which determines whether the current collection object is less than, equal to, or greater than a second object in the sort order.

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

I've noticed these two interfaces, and several associated classes, have been added in .NET 4. They seem a bit superfluous to me; I've read several blogs about them, but I still gönül't figure out what sorun they solve that was tricky before .Kupkuru 4.

C# StructuralComparisons Gets a predefined object that performs a structural comparison C# StructuralComparisons Nedir of two objects.