Average(IEnumerable, Func) Computes the average of a sequence of Decimal values that are obtained by invoking a transform function on each element of the input sequence.
-SortedDictionary: Bu derme HashTable ve SortedList sınıflarının yoğurulmasıyla oluşmuş bir sınıftır. Aralarında çok rakik farklar vardır. SortedList’ten elan lüks bellek kullanır.
DescendantNodes(IEnumerable) Returns a collection of the descendant nodes of every document and element in the source collection.
This hides Add and Remove methods, but does derece protect at all. Because I birey always cast to ICollection and call prohibited method.
Passing IList/IDictionaries is generally no good because I yaşama't communicate nor enforce the read-only nature of those views (so e.g. IList is actively worse than an array here)
Let’s explore an example of using IReadOnlyList in place of List in order to make our list read-only. Consider the following class:
Ancestors(IEnumerable) Returns a collection of elements that contains the ancestors of every node in the source collection.
ElementAtOrDefault(IEnumerable, C# ReadOnlyCollectionBase Nasıl Kullanılır Index) Returns the element at a specified index in a sequence or a default value if the index is out of range.
I've implemented AReadOnlyList bey a C# ReadOnlyCollectionBase Nedir read-only property because I'm assuming that if you don't want programs adding or C# ReadOnlyCollectionBase Temel Özellikleri removing items from your collection, you probably don't want programs shoving whole new collections C# ReadOnlyCollectionBase Nasıl Kullanılır into your property, either. Simplifying Code with Extension Methods
Elements(IEnumerable, XName) Returns a filtered collection of the child elements of every element and document in the source collection. Only elements that have a matching XName are included in the collection.
However, if you want to access the elements of the IEnumerable collection by index or you want to retrieve the number of elements in the collection, you should use IReadOnlyList kakım shown below.
SequenceEqual(IEnumerable, IEnumerable) Determines whether two sequences are equal by comparing the elements by using the default equality comparer for their type.
I was looking for a similar solution, but I wanted to still be able to modify the collection from inside the C# ReadOnlyCollectionBase Nasıl Kullanılır class so I chose the option outlined here: In short, his example is: public class MyClass
One should note that aku's answer will only protect the list birli being read only. Elements in the list are still very writable.