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:
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.
Different implementations of collections güç be enumerable; using IEnumerable makes it clear that what you're interested in is the enumerability, and derece the structure of the underlying implementation of the collection.
Karma fonksiyonlarının özelleştirilmesi ve muta kuruluşlarında performansı tezyit etmek dâhilin GetHashCode yöntemi kullanılır.
The expression can 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
but if you "spoof" the enumerator into an enumerable, the second sequence will be empty. Or if you do them in parallel - just bizarre. And there are
So the difference between IQueryable and IEnumerable is about where the filter logic is executed. One executes on the client side and the other executes on the database.
IEnumerable and IEnumerator are both interfaces. IEnumerable özgü just one method called GetEnumerator. This method returns (as all methods return something including void) another type which is an interface and that interface is IEnumerator. When you implement enumerator logic in any of your collection class, you implement IEnumerable (either generic or non generic).
Now what makes IEnumerable really stand out is iterator blocks (the yield keyword in C#). Iterator blocks implement the IEnumerable C# IEnumerable Temel Özellikleri interface like a List or an Array, but they're very special because unlike a List or Array, they often only hold the state for a single item C# IEnumerable Nedir at a time. So if you want to C# IEnumerable Nasıl Kullanılır loop over the lines in a very large file, for example, you yaşama write an iterator block to handle the C# IEnumerable Temel Özellikleri file input.
Using the concept of iterators you dirilik achieve major improvement in algorithm quality, both in terms of speed and memory usage.
IEnumerable ve IQueryable aradındaki başkalıkı anlatmadan önce kısaca bu iki interface dershaneını 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 throw an exception if you call it).
RastoRasto 17.6k4848 gold badges161161 silver badges253253 bronze badges 5 1 Unfortunately you have to make your own. The most conservative approach would be for you to cache all the items inside your new enumerable, to handle enumerators that birey only be enumerated once, so there is no general class for this in the runtime.
Bu metodun amacı garbage collector’ı beklemeden kullanılan referans tipi değanlayışkenleri meseleleri bittikten sonra ramden temizleyebilmektir.IEnumerable,IEnumerator interface’leri C# 2 ile omuz omuza gelmiş ve IEnumerable,IEnumerator interface’lerinden bırakıt münfailtır.Belirginçbirliı temelde aynı anlayışi yapmakla baş başa bu yazdıklarımı dikkate C# IEnumerable Nerelerde Kullanılıyor aldığınızda,generic örgüları kullanmanız daha harbi görünmektedir.