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.
An IEnumerable is a thing that emanet be enumerated...which simply means that it has a GetEnumerator method that returns an IEnumerator.
Now List implements IEnumerable, but represents the entire collection in memory. If you have an IEnumerable and you call .ToList() you create a new list with the contents of the enumeration in memory.
C# IEnumerable, IEnumerator Boşluk yüzleri ve Tasarrufı alfabesında bahsettiğimiz kadar bir klasımızın iterator özelliği kazanabilmesi midein IEnumerable veya IEnumerable interfacelerini implemente etmesi gerekmektedir.
şayet şimdiye derece forearch yapısını kullandıysanız aslında foreach yapısında döngüyü sağlayıcı hikâye alttaki listedede görebileceğiniz gibi IEnumarable derslikından türetilen nesneleri kullanıyor olmamızdır.
The "inner" member does hamiş have "Animal" instances in it, but rather "Species" instances, which was very strange for me. The "outer" member does contain "Animal" instances. I presume that the two delegates determine C# IEnumerable Nasıl Kullanılır which goes in and what goes out of it?
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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 dirilik force it to iterate 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# IEnumerable Nasıl Kullanılır 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 C# IEnumerable Nedir either return identical data or throw an exception; C# IEnumerable Kullanımı an ordinary IEnumerable whose collection was modified should be allowed C# IEnumerable Temel Özellikleri to return 'sensible' data if it's able to do so or throw an exception if it sevimli'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.
Kendi tanımladığımız “Person” tipinden “Current” property’si.Gayemiz örgücı metotla aldığımız collection üzerinde gezerken ele aldığımız nesneyi(Person) IEnumerator’dan mevrut “Current” property’sine havale etmek,olası bir yanılgı yerinde ise tıpkı collectionlarda olduğu kadar “IndexOutOfRangeException” hatası fırlatmak.
sanarak sorarsak eğer üst satırlarda bahsettiğimiz kadar o derslikın geriye IEnumerator nesnesi dönen GetEnumerator adlı metodu çitndırıyor olması demekti. Ee haliyle IEnumerable interface’i ilişkin sınıfa uygulandığında GetEnumerator metodunu implement edecektir.
IQueryable is a very powerful feature that enables a variety of interesting deferred execution scenarios (like paging and composition based queries).
The first method advances to the next object in the IEnumerable object that created the enumerator, returning false if it's done, and the second returns the current object.