Bey mentioned by Mr. Copsey, this özgü the benefit of providing decoupling from the implementation, but I'm of the contention that a clear definition of the smallest subset of interface functionality bey possible (i.
Örneğin oluşturduğumuz bir List içerisine biz Add komutu ile ekleme yapabiliyoruz veya Count ile içerisinde kâin elemanların sayısını alabiliyoruz ve bunu foreach içerisinde kullanabiliyoruz. Evet List bir derslik olmasına mukabil foreach nasıl buna onay veriyor?
I understand why IQueryable is better choice for "out-of-memory" data but I am struggling to understand why IEnumerable is better for "in-memory" veri? I still think it's better to get filtered veri than to get get veri and apply filter.
There are many differences but let us discuss about the one big difference which makes the biggest difference. IEnumerable interface is useful when your collection is loaded using LINQ or Entity framework and you want to apply filter on the collection.
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 ?
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This is a nice videoteyp on youtube C# IEnumerable Temel Özellikleri which demonstrates how these interfaces differ , worth a watch. Below goes a long descriptive answer for it.
IEnumerable and IEnumerator are both interfaces. IEnumerable has just one method called GetEnumerator. This method returns (as all C# IEnumerable Nedir methods return something including void) another type which is an interface and that interface is IEnumerator. When you implement enumerator logic in any of your collection class, you implement IEnumerable (either generic or non C# IEnumerable Kullanımı generic).
Bu şekilde koleksiyon içindeki elemanlara sırasıyla muvasala C# IEnumerable Nasıl Kullanılır katkısızlanabilir. Aşağıda bu yararlanmaı gösteren bir örnek bulunmaktadır:
In a yetişek, it may be better to defer converting your query to a list until the very end, so if I'm going to enumerate through Leopards and Hyenas more than once, I'd do this:
This takes an IEnumerator factory function, which usually sevimli be provided very easily instead of the single IEnumerator instance (which yields wrong results after first iteration and breaks the semantics of IEnumerable). This avoids the issues marked by Marc Gravell and establishes full IEnumerable behavior.
diye sorarsak şayet üst satırlarda bahsettiğimiz üzere o klasın geriye IEnumerator nesnesi dönen GetEnumerator isminde metodu çitndırıyor olması demekti. Ee haliyle IEnumerable interface’i alakadar sınıfa uygulandığında GetEnumerator metodunu implement edecektir.
C# dilinde, IEnumerator özellikle kötüdaki kadar koleksiyonlar üzerinde veri kıraat ve aksiyonlemlerinde yeğleme edilir:
If you are writing a class, and your class implements the IEnumerable interface (generic (T) or not) you're C# IEnumerable Kullanımı allowing any consumer of your class to iterate over its collection without knowing how it's structured.