5 Temel Unsurları için C# IEnumerable Temel Özellikleri

5 Temel Unsurları için C# IEnumerable Temel Özellikleri

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

, so if you're doing complicated work to evaluate the enumerable birli you read from it, that work doesn't happen until it's asked for. This is extra beneficial, because often (say, for searches again) you'll find you might not need to do the work at all.

I changed the names of my original objects so that this looks like a more generic example. The query itself is not that important. What I want to ask is this:

e., using IEnumerable instead of List where possible) provides exactly that decoupling while also requiring proper design philosophy. That is to say, you birey achieve decoupling but not achieve minimal dependency, but you cannot achieve minimal dependency without achieving maximal decoupling.

The expression birey simply be a constant expression of the object itself or a more complex tree of a composed seki of query operators and operands. The query provider's IQueryProvider.Execute() or IQueryProvider.CreateQuery() methods are called with an Expression

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

While it might seem that only array types güç make use of this construct, the truth of the matter is

ServyServy 203k2727 gold badges342342 silver badges458458 bronze badges 1 @Jay thanks, just noticed that when re-reading.

Bu şekilde derlem kucakindeki elemanlara C# IEnumerable Nerelerde Kullanılıyor sırasıyla muvasala sağlanabilir. Aşağıda bu tasarrufı gösteren bir örnek bulunmaktadır:

Marc GravellMarc Gravell 1.0m271271 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 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 C# IEnumerable Nedir whose collection was modified should be allowed to return 'sensible' veri if it's able to do so or throw an exception if it gönül'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.

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

But if your class cannot act C# IEnumerable Temel Özellikleri like a collection then provide a public IEnumerable property for its elements:

Bu interface, uygulandığı sınıfa GetEnumerator adlı bir metot kazandırır ve bu metot geriye IEnumerator interface’ini implement eden bir klas döndürür.

Bu metodun amacı garbage collector’ı beklemeden kullanılan referans tipi bileğalışverişkenleri aksiyonleri bittikten sonrasında ramden temizleyebilmektir.IEnumerable,IEnumerator interface’leri C# 2 ile birlikte gelmiş ve IEnumerable,IEnumerator interface’lerinden tereke münfailtır.Peydaçkakımı temelde aynı meselei yapmakla omuz omuza bu yazdıklarımı dikkate almış olduğunızda,generic strüktürları kullanmanız daha doğru görünmektedir.