The Ultimate Guide To C# IEnumerable Nasıl Kullanılır

The Ultimate Guide To C# IEnumerable Nasıl Kullanılır

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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.

If you niyet to build a public API, it's better to use IEnumerable than List, because you better use the most minimalistic interface/class. List lets you access objects by index if that's required.

I changed the names of my original objects so that this looks like a more generic example. The query itself is derece that important. What I want to ask is this:

The following code example demonstrates the best practice for iterating a custom collection by implementing the IEnumerable and IEnumerator interfaces. In this example, members of these interfaces are not explicitly called, but they are implemented to support the use of foreach (For Each in Visual Basic) to iterate through the collection.

An Enumerable is a class that güç give you Enumerators. It katışıksız a method called GetEnumerator which gives you an Enumerator that looks at its items. When you write a foreach loop in C#, the code that it generates calls GetEnumerator to create the Enumerator used by the loop.

IEnumerator is a C# IEnumerable Temel Özellikleri class that enumerates collections. A class that implements IEnumerable returns an IEnumerator. A class that implements IEnumerator katışıksız custom enumeration logic.

So if I am going through all the items on ebay, one at a time would be something even a small computer emanet handle, but ".ToList()" would surely run me C# IEnumerable Nerelerde Kullanılıyor out of memory, no matter how big my computer was. No computer güç by itself contain and handle C# IStructuralComparable Nasıl kullanılır such a huge amount of veri.

Koleksiyonlar Arasında Gezinmeyi Esenlar: IEnumerable, koleksiyonlar arasında kolayca gezinmenizi esenlar. GetEnumerator metodu ile koleksiyonun her bir C# IStructuralComparable Kullanımı elemanına erişebilir ve bu elemanlar üzerinde iş yapabilirsiniz.

The major difference between IQueryable and IEnumerable is that IQueryable executes query with filters whereas IEnumerable executes the query first and then it filters the veri based on conditions.

Is it legal to initialize an array via a functor which takes the array itself kakım a parameter by reference? more hot questions

" This is false, because the where clause is getting called on an IEnumerable and that only knows how to loop through objects which are already coming from the database. If you made the return of AllSpotted() and the parameters of Feline() and Canine() into IQueryable, then the filter would happen in SQL and this answer would make sense.

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).

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If you C# IStructuralComparable Temel Özellikleri are writing a class, and your class implements the IEnumerable interface (generic (T) or derece) you're allowing any consumer of your class to iterate over its collection without knowing how it's structured.