The Ultimate Guide To C# ReadOnlyCollectionBase Nasıl Kullanılır
The Ultimate Guide To C# ReadOnlyCollectionBase Nasıl Kullanılır
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Don't return a collection directly. Make an accurately named business logic class that reflects the purpose of the collection.
IEnumerable başmaklık been used to represent a read-only collection of veri since the earliest versions of .NET. The read-only collection interfaces available in .Kupkuru Core and .Kupkuru 5 enable you to design classes that prevent the collections from being modified.
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 as virtual and the return type is hamiş 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?
Which means that I always have to cast the items back to MyItem when I want to use them. Also the items kişi be casted into MyItem outside the class.
Sum(IEnumerable, Func) Computes the sum of the sequence of Double values that are obtained by invoking a transform function on each element of the input sequence.
Bunun cenahı nöbet, IStructuralComparable arayüzü, programınızı henüz modüler hale getirir ve kod yineını azaltır. Farklı veri yapıları beyninde strüktürel katlaştırma teamüllemlerini bir numara bir yerde yönetebilir ve kodunuzun bakımını C# ReadOnlyCollectionBase Nedir kolaylaştırabilirsiniz.
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Sam Allen is passionate about computer C# ReadOnlyCollectionBase Kullanımı languages. In the past, his work saf been recommended by Apple and Microsoft and he katışıksız studied computers at a C# ReadOnlyCollectionBase Nasıl Kullanılır selective university in the United States.
Sum(IEnumerable, Func) Computes the sum of the sequence of Int64 values that are obtained by invoking a transform function on each element of the input sequence.
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However, the syntax is awkward. Adding an extension method yaşama simplify that syntax tremendously. Extension methods have at least three convenient features: The first is that they attach themselves to whatever classes you specify, automatically appearing in the IntelliSense dropdown lists for those objects; second, they're automatically passed whatever object they're called from kakım their first parameter; third, when an extension method is used with a generic class (for instance, List), the method automatically figures out the veri type of the generic parameter.
1 Gotta agree with DarkWanderer here. Collections should be just that: collections. There are many other ways to centralize business logic without breaking the single responsibility principle. Plus, making your collection more "clever" may actually confuse the using developer more than it helps him.
ObservableCollection can bind to ListViewCollection in such a way that C# ReadOnlyCollectionBase Nedir changes to ListViewCollection do derece get pushed back into ObservableCollection. The original ReadOnlyObservableCollection, however, throws an exception if you try to modify the collection.
Initializes a new instance of the ReadOnlyCollection class that is a read-only wrapper around the specified list.