En iyi Tarafı C# IEnumerable Nerelerde Kullanılıyor

En iyi Tarafı C# IEnumerable Nerelerde Kullanılıyor

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[Edit] - Needless to say - it's hamiş "either this or that". often it would make good sense to use both a list and an IEnumerable in the same class. No computer in the world could list all prime numbers, because by definition this would require an infinite amount of memory. But you could easily think of a class PrimeContainer which contains an IEnumerable primes, which for obvious reasons also contains a SortedList _primes.

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The second method allows only List objects to be passed in; it will not accept an array or a String object. Obviously, the first method is better because it is much more flexible and emanet be used in a much wider range of scenarios.

C# IEnumerable kullanımı olabildiğince basittir ve alelumum koleksiyonlar üzerinde mesleklemler yapıp etmek muhtevain yeğleme edilir. İşte hamle hamle nasıl kullanılacağına dayalı detaylı bir tavzih:

İlgili adres makale kırm sürecinde bilincinde olmaksızın yanılgılıkla yazgılmış olsa lüzumlu.

B. IEnumerator kişi remember the current index when we pass from one method to another (it start working with current index) but IEnumerable hayat't remember the index and it reset the index to beginning. More in this video

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

Yani uzun lafın kısası IEnumerable interface’in implement edildiği bir class üzerine GetEnumerator metodu uygulattırılır. Haliyle yukarıda yapmış olduğumız kabil ilişkin metodu manuel olarak yazmaktan ve olası doldurulma hatalarından bizleri kurtarmaktadır.

Usually you don't use IEunumerable directly. It is the base class for a number of other collections that you are C# IEnumerable Nasıl Kullanılır more likely to use. IEnumerable, for example, provides the ability to loop through a collection with foreach.

List, on the other hand, is a specific implementation of IEnumerable that stores the objects in a specific, known manner. Internally, this may be a very good way to store your values that you expose via IEnumerable, but a List is derece always appropriate.

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

There's also the issues of deferred execution and unmanaged resources. IEnumerable takes use of the yield syntax, which mean you go over each item by-itself and can perform all kinds of computations before and C# IEnumerable Nasıl Kullanılır after. And again, this happens one-by-one, so you don't have to hold all the collection when you start. The computations won't actually be C# IEnumerable Kullanımı performed until the enumeration begins (i.e. until you run the foreach loop).

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. Or if you're reading the results from a large SQL C# IEnumerable Nedir query you kişi limit your memory use to a single record.

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 the method’s parameter by using an interface such birli IEnumerable rather than using a strong veri type such bey List or even a stronger interface type such as ICollection or IList: