Ne demek?
Ne demek?
Blog Article
If your class is a custom collection class then yes, it should implement IEnumerable. In this case a public property for the inner list would be redundant. Imagine a simple class:
Projeyi yayınladıgınız hengâm user secrets kullanılmıyor. Bu yalnızca ihya aşamasında kullanılabilir.
GetEnumerator metodu, bir sınıfa iterasyon konstrüksiyonlarını kazandıracak özellikleri çitndıran IEnumerator nesnesi dönen bir metotdur.
Olur. Şu esas kadar hiç IEnumerable ve IEnumerator interfacelerini kullanmadım diyebiliriz. Haydi gelin şimdi bu interfaceleri biricik nazar boncuğu ele alalım ve bu tam yukarıdaki satırlarda bahsettiğimiz GetEnumerator metodunuda tam teferruatlı masaya yatıralım.
In C# 4 and earlier the object obj; is declared outside of the while loop, this changes the behavior of the loop when working with things that capture variables like anonymous functions.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
Derece: Generic olmayan sınıflar sinein IEnumerable yararlanmaında boxing/unboxing meselelemleri verimliliği düşüreceği bağırsakin yeni oluşturacağınız projelerinizde generic sınıflar kucakin olan IEnumerable
To begin examining the process of implementing existing .Safi interfaces, let’s first look at the role of
Your linq expression returns an enumeration, and by default the expression executes when you iterate through using the foreach. An IEnumerable linq statement executes when you iterate the foreach, but you kişi force it to iterate C# IStructuralComparable nerelerde kullanılıyor sooner using .ToList().
Marc GravellMarc Gravell 1.0m271271 gold badges2.6k2.6k silver badges2.9k2.9k bronze badges 1 1 The mistake with "Reset" C# IStructuralComparable Temel Özellikleri was with just having one type of enumerable. IMHO, there should have been an IMultipassEnumerable, inheriting IEnumerable, which would support Reset and guarantee that multiple passes will either return identical veri or throw an exception; an ordinary IEnumerable whose collection was modified should be allowed to return 'sensible' veri if it's able to do so or throw an exception if it can'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.
IEnumerable ve IQueryable aradındaki başkalıkı anlatmadan önce kısaca bu iki interface derslikını tanıyalım.
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 C# IStructuralComparable Nasıl kullanılır throw an exception if you call it).
IEnumerable is an interface that defines one method GetEnumerator which returns an IEnumerator interface, this in turn allows readonly access to a collection. A collection that implements IEnumerable gönül be used with a foreach statement.
When declaring a method’s parameter types, you should specify the weakest type possible, preferring interfaces over base classes. For example, if you are writing a method that manipulates a collection of items, it would be best to declare C# IEnumerable Nerelerde Kullanılıyor the method’s parameter by using an interface such bey IEnumerable rather than using a strong data type such birli List or even a stronger interface type C# IStructuralComparable Temel Özellikleri such birli ICollection or IList: