En iyi Tarafı C# IEnumerable Nerelerde Kullanılıyor

En iyi Tarafı C# IEnumerable Nerelerde Kullanılıyor

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The difference between IQueryable and IEnumerable is centered around this point. IQueryable builds expression trees whereas IEnumerable does hamiş, at least derece in general terms for those of us who don't work in the secret labs of Microsoft.

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.

I understand why IQueryable is better choice for "out-of-memory" veri but I am struggling to understand why IEnumerable is better for "in-memory" data? I still think it's better to get filtered veri than to get get data and apply filter.

Karma fonksiyonlarının özelleştirilmesi ve veri mimarilarında başarımı bırakmak muhtevain GetHashCode yöntemi kullanılır.

This will create a new list element for each element in memory, enumerating the IEnumerable and is thus less performant if you only enumerate once - but safer and sometimes the List methods are handy (for instance in random access).

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

IEnumerable is a generic interface describing something that emanet be enumerated (you hayat iterate through it and see/retrieve all C# IEnumerable Nerelerde Kullanılıyor of its elements). The content of this IEnumerable güç have been pre-generated, or is live/lazily generated when you try to iterate through 'result' (IEnumerable).

It özgü a good performance when you are iterating through C# IStructuralComparable Temel Özellikleri big objects or collections because it does not load the C# IStructuralComparable nerelerde kullanılıyor entire object to memory in order to make iteration.

Nobody mentioned one crucial difference, ironically answered on a question closed kakım a duplicated of this. IEnumerable is read-only and List is hamiş.

Görmüş olduğunüz kabil AlisverisSepetiEnumerator derslikı oluşturup IEnumerator interface'ini implemente etmiştik. Pekâlâ bunu C# IStructuralComparable Nasıl kullanılır yield ile nası yazıcıız? Bundan sonra custum olarak yazdığımız enumerator sınıfı AlisverisSepetiEnumerator'a icap nanay sessiz yapmamız müstelzim:

This takes an IEnumerator factory function, which usually yaşama 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 to implement it. If you need some kind of custom logic, it depends on what you want to do; you emanet inherit list or you can implement IEnumerable. It just depends what is to be achieved.

Why does the Clausius inequality involve a single term/integral if we C# IStructuralComparable Kullanımı consider a body interacting with multiple heat sources/sinks?

In addition to all the answers posted above, here is my two cents. There are many other types other than List that implements IEnumerable such ICollection, ArrayList etc.