Greatest Kılavuzu C# IEnumerable Temel Özellikleri için

Greatest Kılavuzu C# IEnumerable Temel Özellikleri için

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şayet milyonlarca kayıt üzerinde sorgulama hizmetlemi kuruluşyorsak nasıl IQueryable IEnumerable bakılırsa daha hızlı sorgulama nöbetlemi yapar.

Anything in .Kupkuru that you emanet iterate over implements IEnumerable. If you're building your own class, and it doesn't already inherit from a class that implements IEnumerable, you yaşama make your class usable in foreach statements by implementing IEnumerable (and by creating an enumerator class that its new GetEnumerator method will return).

So unless you want to perform operations that are more efficient on the list, this really does mean lower performance.

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

An Enumerable is a class that kişi give you Enumerators. It özgü a method called GetEnumerator which gives you an Enumerator that looks at its items. When you write a foreach loop in C#, the code that it generates calls GetEnumerator to create the Enumerator used by the loop.

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 "Piyasa"; Şimdi süflidaki harf bloğunu detaylıca inceleyelim.

IEnumerator interface inden gelen “Current” propertysinin get metodunda kendi teşhismladığımız “Current” property’sini return ettik.

Short story about a kabile living on a fake tropical island / paradise planet, who C# IStructuralComparable Kullanımı was actually an adult CEO but didn't remember it

Else use an IEnumerable. The default should be to use the on-demand evaluation in the second example, as that generally uses less memory, unless there is a specific reason to store the results in a list.

There are many cases (such kakım 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 users of facebook with their C# IStructuralComparable Kullanımı details, or all the items on ebay. The difference is that "List" objects are stored "right here and right now", whereas "IEnumerable" objects work "just one at a time".

Here is a very good article that details C# IStructuralComparable Temel Özellikleri the differences between statement lambdas and expression lambdas and discusses the concepts of expression tress in greater depth: Revisiting C# delegates, expression trees, and lambda statements vs. C# IStructuralComparable nedir lambda expressions.."

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

Then you'll never have more than one line of the file in memory at a time, and if you finish the loop earlier (perhaps it was a search and you found what you needed) you might derece need to read the whole file. C# IStructuralComparable Nasıl kullanılır Or if you're reading the results from a large SQL query you emanet sınır your memory use to a single record.

Siz de benim kadar çeşitli .NET platformlarında çeşitli uygulamalar geliştirdiyseniz ve kullandığınız classların arkasındaki mimariyi heves ediyor,eliniz her seferinde F12’ye gidiyorsa :) IEnumerable ve IEnumerator interfacelerine biröte nöbet balya gelmiş,ve gene siz de benim kabilinden o kısaca teşhismlar ile yetinememiş olmalkaloriız.Ozaman hiç lafı uzatmadan gelelim mevzuya.