The Ultimate Guide To C# ReadOnlyCollectionBase Nasıl Kullanılır

The Ultimate Guide To C# ReadOnlyCollectionBase Nasıl Kullanılır

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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.

Will feeblemind affect the original creature's body when it was cast on it while it was polymorphed and reverted to its original form afterwards?

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 birli 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?

Have children's car seats not been proven to be more effective than seat belts alone for kids older than 24 months?

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.

Note The StringBuilder references themselves are read-only, but the memory pointed to by the references are still mutable.

Matthew WatsonMatthew Watson 108k1111 gold badges170170 silver badges290290 bronze badges 2 2 C# ReadOnlyCollectionBase Nerelerde Kullanılıyor To avoid that a client gets a writable object by downcasting, WritableMyItem (and IWritableMyItem if used) could be made private or internal.

In my example I exposed it all, but you don't have to do this. You kişi make it read-only if you want, or validate additions to the list, prior to adding them.

I've implemented AReadOnlyList kakım a read-only property C# ReadOnlyCollectionBase Nerelerde Kullanılıyor because I'm assuming that if you don't want programs adding or removing items from your collection, you probably don't want programs shoving whole new collections into C# ReadOnlyCollectionBase Nedir your property, either. Simplifying Code with Extension Methods

In short: I think your question is covered with a perfectly good answer by Jon Skeet - ReadOnlyCollection C# ReadOnlyCollectionBase Kullanımı or IEnumerable for exposing member collections?

ICollection is such abstraction and you could say that ICollection does hamiş have an exact corresponding peer in the generic world; IEnumerable is the closest.

1 Gotta agree with DarkWanderer here. Collections should be just that: collections. There are C# ReadOnlyCollectionBase Temel Özellikleri 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.

1 Also, in the provided case, the best center of knowledge on whether the invoice birey be paid is the invoice itself, so it must have a property CanBePaid - so, a bit of cleverness eliminates the need to change "in 4 places"

The IReadOnlyCollection interface extends the IEnumerable interface and represents a basic read-only collection interface. It also includes a Count property apart from the IEnumerable members birli shown in the code snippet given below.