Implementation of IEnumerable is generally the preferred way for a class to indicate that it should be usable with a "foreach" loop, and that multiple "foreach" loops on the same object should operate independently.
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An IEnumerable is a thing that kişi be enumerated...which simply means that it has a GetEnumerator method that returns an IEnumerator.
A. We iterate the list in different way, foreach yaşama be used for IEnumerable and while loop for IEnumerator.
By adding on a Where statement you aren't actually doing much of anything, you're just adding an extra filter to the query so that later on, when you actually evaluate the sequence (in this case, when ToList is called) those filters will all be applied.
but if you "spoof" the enumerator into an enumerable, the second sequence will be empty. Or if you do them in parallel - just bizarre. And there are
C# IEnumerable kullanmanın birkötü kazanımı vardır ve bu avantajlar sayesinde yazılım geliştiricilerin sıkça tercih ettiği bir arayüz olmuşdolaşma. İşte detaylı olarak illet C# IEnumerable kullanmalıyız:
ServyServy 203k2727 gold badges342342 silver badges458458 bronze badges 1 @Jay thanks, just C# IStructuralComparable Kullanımı noticed that when re-reading.
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 C# IStructuralComparable Kullanımı on conditions.
Gördüğünüz kabilinden AlisverisSepetiEnumerator dershaneı oluşturup C# IStructuralComparable nerelerde kullanılıyor IEnumerator interface'ini implemente etmiştik. Pekâlâ bunu yield ile nası yazıcıız? Imdi custum olarak yazdığımız enumerator derslikı AlisverisSepetiEnumerator'a ister namevcut hiçbir yapmamız gereken:
" 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.
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On the flip side, it is usually best to declare a method’s return C# IStructuralComparable Temel Özellikleri type by using the strongest type possible (trying not to commit yourself to a specific type). Share Follow
The first method advances to the next object in the IEnumerable object that created the enumerator, returning false if it's C# IStructuralComparable nerelerde kullanılıyor done, and the second returns the current object.