5 Temel Unsurları için C# IEnumerable Kullanımı

5 Temel Unsurları için C# IEnumerable Kullanımı

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[Edit] - Needless to say - it's derece "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.

Anything in .Kemiksiz that you kişi iterate over implements IEnumerable. If you're building your own class, and it doesn't already inherit from a class that implements IEnumerable, you can make your class usable in foreach statements by implementing IEnumerable (and by creating an enumerator class that its new GetEnumerator method will return).

type seq Collaborate with us on GitHub The source for this content sevimli be found on GitHub, where you sevimli also create and review issues and pull requests. For more information, see our contributor guide.

For example, if you do hamiş need to access items by index, but constantly insert items at the beginning of your collection and then remove items from the end, a Queue would be far more appropriate to use.

Although there are uses of IEnumerable other than "foreach", the olağan indication that one should implement IEnumerable is that the class is one where it would make sense to say "foreach foo in classItem foo.do_something(); .

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

// but this throws an exception, because the pointer or link to the // database namely the DbContext called MyEntities no longer exists.

IEnumerable and IEnumerator are both interfaces. IEnumerable saf just one method called GetEnumerator. This method returns (kakım C# IEnumerable Nerelerde Kullanılıyor 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).

Bu alanda yahut değişik bir alanda, benim ve vesair yardımcı insanların paylaşımlarına lütfen acizliğiniz ve ezikliğinizle yaklaşmayınız. İzin istemek, benim hükmüm şeşna girmeniz anlamına gelmemektedir.

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

This takes an IEnumerator factory function, which usually sevimli 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 by Marc Gravell and establishes full IEnumerable behavior.

I think if your newly implemented class just behaves the sameway birli a list does, there is no need C# IEnumerable Nedir to implement it. If you need some kind of custom logic, it depends on what you want to do; C# IEnumerable Nedir you emanet inherit list or you sevimli implement IEnumerable. It just depends what is to be achieved.

IQueryable is faster than IEnumerable if we are dealing with huge amounts of data from database because,IQueryable gets only required data from database where birli IEnumerable gets C# IEnumerable Kullanımı all the veri regardless of the necessity from the database

The most important thing to realize is that, using Linq, the query does hamiş get evaluated immediately. It is only run birli part of iterating through the resulting IEnumerable in a foreach C# IEnumerable Temel Özellikleri - that's what all the weird delegates are doing.