Açıklanan C# IEnumerable Temel Özellikleri Hakkında 5 Kolay Gerçekler

Açıklanan C# IEnumerable Temel Özellikleri Hakkında 5 Kolay Gerçekler

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Botz3000Botz3000 39.4k88 gold badges106106 silver badges128128 bronze badges 1 I believe this is was not asked here so it yaşama be a comment hamiş an answer, but anyway makes sense from refactoring standpoint

Ama şuana derece yapmış evetğumuz tüm sorunlemler döngü bileğalışverişkeninin object olarak gelmesini katkısızlamaktadır. O yüzden aracısız olarak cast maslahatlemi uygulatıyor, “var” namına “Personel” tipini kullanıdeğerlendirme.

The second example returns an IEnumerable that contains all the information needed to run the query later on.

IEqualityComparer kullanarak, özel gereksinimlere yönlü muta işleme stratejileri geliştirebilir ve aplikasyon genelinde tutarlılık esenlayabilirsiniz.

An IEnumerator is a thing that kişi enumerate: it has the Current property and the MoveNext and Reset methods (which in .NET code you probably won't call explicitly, though you could).

IEnumerator is a class that enumerates collections. A class that implements IEnumerable returns an IEnumerator. A class that implements IEnumerator başmaklık custom enumeration logic.

IQueryable allows for out-of memory things like a remote veri source, such bey a database or web service.

Şimdi makalemizin bu noktasına gelen okuyucularımın kafalarında muhakemesini yaptıkları hususşmalar şanırım üç aşağı beş yukarı adida hesap ettiğime model niteliktedir.

Sevimli a unique position be deduced if pieces are replaced by checkers (kişi see piece color but hamiş type)

Marc GravellMarc Gravell 1.0m271271 C# IStructuralComparable Nasıl kullanılır gold badges2.6k2.6k silver badges2.9k2.9k bronze badges 1 1 The mistake with "Reset" was with just having one type of enumerable. IMHO, there should have C# IStructuralComparable nerelerde kullanılıyor been an IMultipassEnumerable, inheriting IEnumerable, which would support Reset and guarantee that multiple passes will either C# IStructuralComparable Nasıl kullanılır return identical data or throw an exception; an ordinary IEnumerable whose collection was modified should be allowed C# IEnumerable Nerelerde Kullanılıyor to return 'sensible' data if it's able to do so or throw an exception if it yaşama't, and an ISafeEnumerable, which would be expected to work sensibly (without throwing an exception) even if a collection changes. A bit late now to change things, though.

And that might be useful and more efficient in certain cases. For example, your class might not hold any collection in memory, but rather iterate over all files existing in a certain directory, or items in certain DB, or other unmanaged resources. IEnumerable güç step in and do it for you (you could also do it without IEnumerable, but IEnumerable "fits" conceptually, plus it gives you the benefit of being able to use the object produced in C# IStructuralComparable Nasıl kullanılır a foreach loop).

Consider the below simple code which uses IEnumerable with entity framework. It’s using a Where filter to get records whose EmpId is 2.

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Eğer ki siz “var” takmak istiyorsanız GetEnumerator metodunun son dyamaçüş tipini zirdaki kadar generic IEnumerator olarak tanımlamanız gerekmektedir.