C# IEnumerable Temel Özellikleri Herkes İçin Eğlenceli Olabilir

C# IEnumerable Temel Özellikleri Herkes İçin Eğlenceli Olabilir

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Many of the LINQ methods, including Where, use deferred execution. In this case you yaşama think of the IEnumerable kakım a query, rather than the actual result kaş.

An IEnumerable is a thing that gönül be enumerated...which simply means that it özgü a GetEnumerator method that returns an IEnumerator.

Now List implements IEnumerable, but represents the entire collection in memory. If you have an IEnumerable and you call .ToList() you create a new list with the contents of the enumeration in memory.

Although there are uses of IEnumerable other than "foreach", the normal 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(); .

Eğer şimdiye derece forearch yapkaloriı kullandıysanız gerçekte foreach bünyesında döngüyü sağlayıcı fenomen alttaki listedede görebileceğiniz üzere IEnumarable sınıfından türetilen nesneleri kullanıyor olmamızdır.

IEnumerator C# IEnumerable Nerelerde Kullanılıyor interface inden mevrut “Current” propertysinin get metodunda kendi tanılamamladığımız “Current” property’sini return ettik.

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Usually you don't use IEunumerable directly. It is the base class for a number of other collections that you are more likely to use. IEnumerable, for example, provides the ability to loop through a collection with foreach.

I do have one question though. In the first example you loop over the array using foreach but then you cannot do it in the second example. Is this because the array is in a class or because it contains objects?

And that might be useful and more efficient in certain cases. For example, your C# IStructuralComparable Temel Özellikleri 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 dirilik step in and do it for you (you could also do it without IEnumerable, but C# IStructuralComparable nerelerde kullanılıyor IEnumerable "fits" conceptually, plus it gives you the benefit of being able to use the object produced in a foreach loop).

Bir C# IStructuralComparable nerelerde kullanılıyor sonraki elementin varlığını sınayan MoveNext ve geçerli elementi veren GetCurrent metodlarına sahiptir.

If you create an IEnumerable, then all rows C# IStructuralComparable nerelerde kullanılıyor will be pulled into memory birli objects before running the query.

You should still avoid declaring the parameter type birli List. Using IList allows the caller to pass arrays and any other objects whose type implements IList.