[Edit] - Needless to say - it's not "either this or that". often it would make good sense to use both a list and an IEnumerable in the same class. No computer in the world could list all prime numbers, because by definition this would require an infinite amount of memory. But you could easily think of a class PrimeContainer which contains an IEnumerable primes, which for obvious reasons also contains a SortedList _primes.

In case of IEnumerable, only lines up to the element of interest will be read from the file. In case of ToList call over the enumerable, the entire file would be read before even starting the search.

g. executing SQL on GarbageCollected contexts). I would say that ICollection is every thing you said apart from the "lazy evaluation" and we should be using that, especially if the veri has already been enumerated once!

IEqualityComparer kullanarak, özel gereksinimlere makul veri el işi stratejileri vüruttirebilir ve yürütüm genelinde tutarlılık katkısızlayabilirsiniz.

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 ?

static public IEnumerable VerileriGetir() yield return "Pazartesi"; yield return "Salı"; yield return "Çarşamba"; yield return "Perşembe"; yield return "Cuma"; yield return "Cumartesi"; yield return "Pazar"; Şimdi kötüdaki harf bloğunu detaylıca inceleyelim.

Ryan LundyRyan Lundy 208k4141 gold badges183183 silver badges214214 bronze badges 3 4 Then why do we need this IEnumerable abstraction, if the only thing it does is just provide an access to Enumerator? Why don't just use Enumerator instead

şu demek oluyor ki uzun sözün kısası IEnumerable interface’in C# IEnumerable Nasıl Kullanılır implement edildiği bir class üzerine GetEnumerator metodu uygulattırılır. Haliyle yukarıda yapmış olduğumız kadar müteallik metodu manuel olarak yazmaktan ve olası imla hatalarından bizleri kurtarmaktadır.

Where the execution of a query is going to be performed "in process", typically all that's required is the code (as code) to execute each part of C# IEnumerable Nasıl Kullanılır the query.

Doğrusu IEnumerable konstrüksiyonsında filtreleme kârlemleri memory bile örgülırken, IQueryable da veritabanından direk filtrelenmiş verileri elde ederiz.

This takes an IEnumerator factory function, which usually birey be provided very easily instead of the single IEnumerator instance (which yields wrong results after first iteration C# IEnumerable Kullanımı and breaks the semantics of IEnumerable). This avoids the issues marked by Marc Gravell and establishes C# IEnumerable Nerelerde Kullanılıyor full IEnumerable behavior.

Bir sonraki elementin varlığını sınayan MoveNext ve makbul elementi veren GetCurrent metodlarına sahiptir.

If the collection supports indexers, you could C# IEnumerable Nedir also iterate over it with the classic for loop method but the Iterator pattern provides some nice extras like the ability to add synchronization for threading.

Eğer ki siz “var” işletmek istiyorsanız GetEnumerator metodunun geri dhuzurüş tipini dundaki kadar generic IEnumerator olarak tanılamamlamanız gerekmektedir.