GetEnumerator(); Örneğimizde bir “Personel” dershaneı oluşturup, “Personeller” klası içerisinde müntesip derslikın koleksiyon yapısını ve bu koleksiyona data ekleme işlevini yaratıcı Add metodunu teşhismladım. GetEnumerator metodu içinde ise koleksiyonumuzun GetEnumerator() metodu sayesinde bir enumerator elde yazar return ettim.
Projeyi yayınladıgınız dönem user secrets kullanılmıyor. Bu sadece geliştirme aşamasında kullanılabilir.
Different implementations of collections birey be enumerable; using IEnumerable makes it clear that what you're interested in is the enumerability, and derece the structure of the underlying implementation of the collection.
If on the second house, I decide to alter the price (say add one million dollars to the price) - the entire list would change (the order is now different). "one at a time" and "all of them right now" are two different things.
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).
Basically it has a method to get the next item in the collection. It doesn't need the whole collection to be in memory and doesn't know how many items are in it, foreach just keeps getting the next item until it runs out.
IEnumerator interface inden mevrut “Current” propertysinin C# IStructuralComparable Kullanımı get metodunda kendi teşhismladığımız “Current” property’sini return ettik.
the IEnumerable interface, so anything you birey do with a "plain" IEnumerable, you kişi also do with an IQueryable. C# IStructuralComparable nerelerde kullanılıyor IEnumerable just başmaklık a GetEnumerator() method that returns an Enumerator for which you birey call its MoveNext() method to iterate through a sequence of T
Else use an IEnumerable. The default should be to use the on-demand evaluation in the second example, C# IStructuralComparable Kullanımı kakım that generally uses less memory, unless there is a specific reason to store the results in a list.
C# ile MySQL veritabanından bilgi listelemek derunin IEnumerable C# IStructuralComparable Kullanımı kullanarak bayağıdaki örnek harf kullanılabilir:
And that might be useful and more efficient in certain cases. For example, your class might not hold any collection in memory, but rather iterate over all files existing in a certain directory, or items in certain DB, or other unmanaged resources. IEnumerable yaşama step in and do it for you (you could also do it without IEnumerable, but IEnumerable "fits" conceptually, plus it gives you the benefit of being able to use the object produced in a foreach loop).
Ya öğretmen, onca yazdın çizdin anladıkta dü satır IEnumerable yahut IEnumerator interfacelerini kullanmadın?
On the flip side, it is usually best to declare a method’s return type by using the strongest type possible (trying derece C# IStructuralComparable Kullanımı to commit yourself to a specific type). Share Follow
By "functionally equivalent," I mean that's actually what the compiler turns the code into. You birey't use foreach on baz in this example unless