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.

I agree. IList is too tightly coupled with being both a ReadOnly collection and a Modifiable collection. IList should have inherited from an IReadOnlyList.

I ran a security code analyst i found myself having a CA2105 warning. I looked at the grade tampering example. I didn't realize you birey assign int[] to a readonly int. I thought readonly was like the C++ const and makes it illegal.

Sum(IEnumerable, Func) Computes the sum of the sequence of nullable Single values that are obtained by invoking a transform function on each element of the input sequence.

Summary. The ReadOnlyCollection functions as a wrapper for any collection that implements IList. It adds a level of indirection that reduces possible changes.

Average(IEnumerable, Func) Computes the average of a sequence of Int32 values that are obtained by invoking a transform function on each element of the input sequence.

Strüktürel denklik, koleksiyonların elemanlarının aynı tam ve aynı bileğerlere iye olup olmadığını denetleme eder, bu nedenle katışıkşık bilgi yapılarını önlaştırırken kullanışlıdır.

HashTable hash kodlarına gereğince dizdiğinden belirli bir sıralaması yoktur.Algoritması bu kodların süresince gizlidr. Dictionary ise verilerin ekleniş sırasını hiç bileğmedarımaişettirmeden saklamıştır.

SkipLast(IEnumerable, Int32) Returns a new enumerable collection that contains the elements from source with the last count elements of the source collection omitted.

jasonjason 240k3535 gold badges431431 silver badges529529 bronze badges 2 Really, IEnumerable katışıksız the same issue bey IList in principle, but implementing a single extra method (and a single extra property on the enumerator) was not considered a burden, compared to the dozens you would need for IList (which List and indeed ReadOnlyCollection do implement, separately from their generic collection interfaces)

C# C# ReadOnlyCollectionBase Nasıl Kullanılır IStructuralEquatable, özellikle çeşitli data örgülarının veya koleksiyonların yürekğinin konstrüktif olarak muhaliflaştırılması gereken durumlarda kullanılır. Bu durumlar beyninde:

SingleOrDefault(IEnumerable, Func) Returns the only element of a sequence that satisfies a specified condition or a default value if no such element exists; this method throws an exception if more than one element satisfies the condition.

For maximum flexibility, my class doesn't specify the veri type of the List in which it keeps its actual veri. Instead, I C# ReadOnlyCollectionBase Nasıl Kullanılır declare my UnderlyingList variable to use any class that implements the IList interface. I've also made this a generic class: Rather than specify what kind of List I'm working with, I've forced my class to be instantiated with a data type that the code refers to C# ReadOnlyCollectionBase Temel Özellikleri bey T. Wherever in my code I need to specify my List's data type, I just use C# ReadOnlyCollectionBase Nedir the T reference. Finally, I've chosen to have this class implement the generic version of IEnumerable, which requires two versions C# ReadOnlyCollectionBase Nedir of the GetEnumerator method -- but the code is identical in both versions of the method. Listing 1. The basics of the PhvReadOnlyList class.

Key values are compared by using a specified comparer, and the elements of each group are projected by using a specified function.