GetEnumerator(); Örneğimizde bir “Personel” dershaneı oluşturup, “Personeller” sınıfı içinde alakalı klasın koleksiyon yapkaloriı ve bu koleksiyona veri ekleme işlemlevini karşılayıcı Add metodunu teşhismladım. GetEnumerator metodu içerisinde ise koleksiyonumuzun GetEnumerator() metodu sebebiyle bir enumerator elde yazar return ettim.
Down Below I took part of a code I was looking at. I don't understand the IEnumerable part of the Code. Emanet someone just walk me through the meaning of each line. Thanks
I understand why IQueryable is better choice for "out-of-memory" data but I am struggling to understand why IEnumerable is better for "in-memory" veri? I still think it's better to get filtered veri than to get get data and apply filter.
Consider that in your code example a new list created. I don't know what is m_states, but if this is a value types collection, you create a clone of the original list. In this way the returning list gönül be manipulated form the caller Add/Remove/Update elements. without
The expression sevimli simply be a constant expression of the object itself or a more complex tree of a composed takım of query operators and operands. The query provider's IQueryProvider.Execute() or IQueryProvider.CreateQuery() methods are called with an Expression
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
Whenever I'm "stacking" LINQ expressions, I use IEnumerable, because by only specifying the behavior I give LINQ a chance to defer evaluation and possibly optimize the program. Remember how LINQ doesn't generate the SQL to query the database until you enumerate it? Consider this:
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IEnumerable describes behavior, while List is an implementation of that behavior. When you use IEnumerable, you give the compiler a chance to defer work until later, possibly optimizing along the way. If you use ToList() you force the compiler to reify the results right away.
Görmüş olduğunüz üzere AlisverisSepetiEnumerator derslikı oluşturup IEnumerator interface'ini C# IStructuralComparable Kullanımı implemente etmiştik. Evet bunu yield ile nası yazarız? Artık custum olarak yazdığımız enumerator derslikı AlisverisSepetiEnumerator'a lüzum namevcut birlik yapmamız müstelzim:
Then with a IQueryable the generated C# IStructuralComparable Temel Özellikleri SQL will contains “where name = “a”, but with a IEnumerable many more roles will be pulled C# IStructuralComparable Kullanımı back from the database, then the x.name = “a” check will be done by .Kemiksiz.
Ya hoca, onca C# IEnumerable Temel Özellikleri yazdın çizdin anladıkta iki satır IEnumerable yahut IEnumerator interfacelerini kullanmadın?
IEnumerator kullanarak, koleksiyonun topu topunı belleğe yüklemeden, yalnızca zaruri elemanları işçilikler ve bu sayede belleğin çalışan kullanılmasını sağlar.
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.