foreach : is a C# construct/facade in a sense in that you don't need to know how it works under the hood. It internally gets the iterator and calls the right methods for you to concentrate on what you want to do with each item (the contents of the foreach block).
Ryan LundyRyan Lundy 208k4141 gold badges183183 silver badges214214 bronze badges 3 4 Then why do we need this IEnumerable abstraction, if the only thing it does is just provide an access to Enumerator? Why don't just use Enumerator instead
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Bu örneği çaldatmaıştırdığımızda alacağımız çıktı “Uygun” olacaktır. Burada haricen hileınan derece bilgisini GeçmeDurumu Enum tipine cast ederek alınan derece bilgisinin ödenek geldiği kıymeti düzenıyoruz.
A using statement is just a convenient way to write a try-finally where the finally disposes of the resource.
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The power of the iterator pattern is that it allows us to abstract the operation of enumerating(iterating) a collection. Without it, we would have to write C# IEnumerator neden kullanmalıyız completely different code to iterate arrays and lists than we would for dictionaries and linked lists and trees.
Take a moment to consider these classes for a bit. There are some interesting and powerful properties:
IEnumerable has just one method whereas IEnumerator özgü 2 methods (MoveNext and Reset) and a property C# IEnumerator neden kullanmalıyız Current. For easy understanding consider IEnumerable bey a box that contains IEnumerator inside it (though hamiş through inheritance or containment). See the code for better understanding:
IEnumerator or IEnumerator : if you call the GetEnumerator method defined in the previous interface, you get an iterator object bey an IEnumerator reference. This enables you to call MoveNext() and get the Current object.
Bir koleksiyonu yinelemek dâhilin müstelzim kodu peyda etmek sinein .Safi core kitaplığında tanımlanan iki genel arabirime dayanır: IEnumerable ve IEnumerator. Bu işleyiş kötüda henüz detaylı olarak açıklanmıştır.
It güç take a while to really grok this difference, but just remembering C# IEnumerator Kullanımı that a list (or array, or whatever) doesn't have any concept of "where you are in the list" but an iterator over that list/array/whatever does
This is a fine way to do it, but it is a fair amount of code to express something that is pretty trivial. Here’s the same basic solution using Linq:
Looking back however, it was learning these things and related concepts in other languages that grup me on a path that C# IEnumerator Kullanımı somewhat profoundly changed my relationship with sorun solving in programming. Knowing how these things functioned and the abstractions they enabled changed how I thought about C# IEnumerator Önemi Nedir problems from then on.