What is IEnumerable in .NET? - Stack Overflow
Now what makes IEnumerable really stand out is iterator blocks (the yield keyword in C#). Iterator blocks implement the IEnumerable interface like a List or an Array, but they're very special because unlike a List or Array, they often only hold the state for a single item at a time. So if you want to loop over the lines in a very large file ...
Can anyone explain IEnumerable and IEnumerator to me?
IEnumerable and IEnumerator (and their generic counterparts IEnumerable<T> and IEnumerator<T>) are base interfaces of iterator implementations in .Net Framework Class Libray collections. IEnumerable is the most common interface …
c# - How do I implement IEnumerable<T> - Stack Overflow
2012年7月2日 · class FooCollection : IEnumerable<Foo>, IEnumerable { SomeCollection<Foo> foos; // Explicit for IEnumerable because weakly typed collections are Bad System.Collections.IEnumerator IEnumerable.GetEnumerator() { // uses the strongly typed IEnumerable<T> implementation return this.GetEnumerator(); } // Normal implementation for …
What is the difference between IEnumerator and IEnumerable?
IEnumerable has just one method called GetEnumerator. This method returns (as all methods return something including void) another type which is an interface and that interface is IEnumerator . When you implement enumerator logic in any of your collection class, you implement IEnumerable (either generic or non generic).
IEnumerable vs List - What to Use? How do they work?
2010年9月2日 · 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.
Difference between IEnumerable and IEnumerable<T>? - Stack …
2013年2月24日 · It would have been possible for IEnumerable<T> not to extend IEnumerable, but then any code wanting to make use of an IEnumerable<T> couldn't call into a method accepting IEnumerable - and there were a lot of methods like that from .NET 1.1 and 1.0.
.net - understanding IEnumerable<T> in C# - Stack Overflow
Since numbers implements the IEnumerable, we can iterate through it's elements using the above foreach. I think that the compiler behind the scenes emits some code, when we define the numbers and then try to iterate through it's elements. Actually I found that Array implements IEnumerable<T>.
What's the role of IEnumerable<T> and why should I use it?
IEnumerable<T> is an interface that tells us that we can enumerate over a sequence of T instances. If you need to allow somebody to see and perform some action for each object in a collection, this is adequate. List<T>, on the other hand, is a specific implementation of IEnumerable<T> that stores the
C#: IEnumerable, GetEnumerator, a simple, simple example please!
public class AlbumList : IEnumerable<Album> { public IEnumerator<Album> GetEnumerator() { foreach (Album item in internalStorage) { // You could use conditional checks or other statements here for a higher // degree of control regarding what the enumerator returns.
.net - Does LINQ work with IEnumerable? - Stack Overflow
IEnumerable list = new ArrayList { "dog", "cat" }; IEnumerable<string> result = from string item in list select item; foreach (string s in result) { // InvalidCastException at runtime if element is not a string Console.WriteLine(s); }