En Kuralları Of C# IEnumerable Nedir

En Kuralları Of C# IEnumerable Nedir

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@OlivierJacot-Descombes: Short of using Reflection, there's no way of knowing whether an IList which allows anything of a given type to be stored by index will allow everything of that type to be stored by index.

var kısmından azıcık bahsedersek var burada gelen değeri en esen nasıl saklayabileceğini belirleyip yapısını bu şekilde ayarlıyor. Yani IQueryable kullanıyor.

IEnumerator arayüzü, bilgi kuruluşlarına genel bir muvasala yöntemi sağlayarak kodun daha modüler olmasını ve bakımının kolaylaşmasını sağlamlar. Antrparantez, C# programlamada geniş olarak kullanılan bu yöntem, kodun okunabilirliğini pozitifrır ve yine kullanılabilirliği teşvik değer.

Analogy: Imagine you are a detective on an aeroplane . You need to work your way through all the passengers to find your suspect.

By adding on a Where statement you aren't actually doing much of anything, you're just adding an extra filter to the query so that later on, when you actually evaluate the sequence (in this case, when ToList is called) those filters will all be applied.

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

Not: Generic olmayan sınıflar muhtevain IEnumerable kullanımında boxing/unboxing davranışlemleri verimliliği düşüreceği midein yeni oluşturacağınız projelerinizde generic sınıflar bâtınin olan IEnumerable

Is "parse out" actually a phrasal verb, and in what context do you use "parse" more hot questions

Nobody mentioned one crucial difference, ironically answered on a question closed bey a duplicated of this. IEnumerable is C# IEnumerable Kullanımı read-only and List is derece.

There are many cases (such birli an infinite list or a very large list) where IEnumerable cannot be transformed to a List. The most obvious examples are all the prime numbers, all the C# IEnumerable Temel Özellikleri users of facebook with their details, or all the items on ebay. The difference is that "List" objects are stored "right here and right now", whereas "IEnumerable" C# IEnumerable Nedir objects work "just one at a time".

And that might be useful and more efficient in certain cases. For C# IEnumerable Nedir example, your class might hamiş 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 sevimli 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 a foreach loop).

a reset on enumerators, but this is largely a design mistake and shouldn't be used (it is even a formal requirement in the spec that iterator blocks throw an exception if C# IEnumerable Nerelerde Kullanılıyor you call it).

In simple words other major difference is that IEnumerable execute select query on server side, load data in-memory on client side and then filter data while IQueryable execute select query on server side with all filters.

You should still avoid declaring the parameter type kakım List. Using IList allows the caller to pass arrays and any other objects whose type implements IList.