GetEnumerator(); Örneğimizde bir “Personel” dershaneı oluşturup, “Personeller” sınıfı içinde ilgili derslikın derme yapkaloriı ve bu koleksiyona data ekleme teamüllevini karşılayıcı Add metodunu teşhismladım. GetEnumerator metodu içerisinde ise koleksiyonumuzun GetEnumerator() metodu sebebiyle bir enumerator elde edip return ettim.
What this code is saying is that if userId was specified, then add a filter on the veri so that only items where the userId matches that variable will be included. That same thing is done for email and lastFourdigits.
GetEnumerator metodu, bir sınıfa iterasyon binalarını kazandıracak özellikleri çitndıran IEnumerator nesnesi dönen bir metotdur.
Muhtelit fonksiyonlarının özelleştirilmesi ve muta yapılarında performansı bırakmak kucakin GetHashCode yöntemi kullanılır.
I have writen about custom IEnumerator. Whats the simplest way to make IEnumerable from it ? Mefkûre solution (one line of code) would be if there was some class for that purpose. Or do I have to create my own ?
They usually have a GetXXX method that returns a IEnumerable of whatever type the custom collection class uses so the internal collection sevimli be iterated around using a foreach loop.
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You don't have to open a C# IStructuralComparable Temel Özellikleri book and learn how to traverse the tree - but simply use the foreach statement on that object and you're done.)
The major difference between C# IEnumerable Nasıl Kullanılır IQueryable and IEnumerable is that IQueryable executes query with filters whereas IEnumerable executes the query C# IStructuralComparable Nasıl kullanılır first and then it filters the data based on conditions.
There are pros and cons to both. If you call ToList, you may remove some mystery as to when the query gets executed. If you stick to IEnumerable, you get the advantage that the izlence doesn't do any work until it's actually required.
IEnumerable ve IQueryable aradındaki farkı anlatmadan önce kısaca bu dü interface dershaneını teşhisyalım.
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RastoRasto 17.6k4848 gold badges161161 silver badges253253 bronze badges 5 1 Unfortunately you have to make your own. The most conservative approach would be for you to cache all the items inside your new enumerable, to handle enumerators that sevimli only be enumerated once, C# IStructuralComparable nedir so there is no general class for this in the runtime.
If you are writing a class, and your class implements the IEnumerable interface (generic (T) or not) you're allowing any consumer of your class to iterate over its collection without knowing how it's structured.