Satın Almadan Önce C# ReadOnlyCollectionBase Nedir Things To Know
Satın Almadan Önce C# ReadOnlyCollectionBase Nedir Things To Know
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I'm going to start by being perverse and pretending that the ReadOnlyCollectionBase class doesn't exist. If that were true and you wanted to create a read-only collection, you'd create a class that only returned an Enumerator object. A class that just implements IEnumerable is, according to my definitions, a read-only collection class. Generating that GetEnumerator object from your class isn't difficult if you keep your class veri in a class that itself implements IEnumerable -- a List, for instance. If you do keep your veri in a List, then you sevimli use the List GetEnumerator method to retrieve an Enumerator object, which you birey then return to the program using your class. Listing 1 has the basics of this class (I've called it PhvReadOnlyList).
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I was thinking about creating a new class derived from ReadOnlyCollection (class ReadOnlyMyCollection : ReadOnlyCollection or class ReadOnlyMyCollection : ReadOnlyCollection) which returns the read-only wrapper class (ReadOnlyMyItem) through the square brackets operator, but either the square brackets operator is hamiş marked kakım virtual and the return type is derece even the same or the constructor doesn't have an IList of the wrapper class (IList) to use. Should I build the class (ReadOnlyMyCollection) from scratch?
Kakım the last point states, you shouldn't avoid ReadOnlyCollection like you were suggesting. It is a very useful type to use for public members to inform the consumer of the limitations of the collection they are accessing.
Summary. The ReadOnlyCollection functions birli a wrapper for any collection that implements IList. It adds a level of indirection that reduces possible changes.
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Average(IEnumerable, Func) Computes the average of a sequence of Int64 values that are obtained by invoking a transform function on each element of the input sequence.
However, it should be noted that while these read-only collection types provide a read-only view of the veri, they are only wrappers. They do not provide an immutable copy of the C# ReadOnlyCollectionBase Kullanımı collection.
Sometimes you may want to use an interface, perhaps because you want to mock the collection during unit testing. Please see my blog entry for adding your own interface to ReadonlyCollection by using an adapter.
One might derece realize that the collection is read-only but the variable pointing to it is hamiş. What a ReadOnlyCollection would mean if I emanet reassign the variable itself to a new collection altogether. +1.
Average(IEnumerable, C# ReadOnlyCollectionBase Temel Özellikleri Func) Computes the average of a sequence of nullable Double values that are obtained by invoking a transform function on each element of the input sequence.
Important Some information relates to C# ReadOnlyCollectionBase Nerelerde Kullanılıyor prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect C# ReadOnlyCollectionBase Temel Özellikleri to the information provided here.
4 Eylül 2012 Bilgelik Okumuş C# Readonly tanımlı değhizmetkeni salt okunur moduna getirmektedir. Doğrusu readonly olarak C# ReadOnlyCollectionBase Kullanımı tanılamamlanan bir parametre yalnızca okunabilmektedir. Setleme meselelemi bileğemekkenin oluşturulduğu anda ya da oluşturulan derslikın constructor metodu içerisinde gestaltlmaktadır.