What is read-only collection c#?
ReadOnlyCollection makes an array or List read-only. With this type from System. Collections. ObjectModel, we provide a collection of elements that cannot be changed.
How do I make Collections read-only?
The read-only means unmodifiable view of Collection in which we can not perform any operation which will change the collection through add(), remove() or set() method. We can obtain read-only collection from the existing collection by calling Collections. unmodifiableCollection() method.
Is a readonly collection mutable?
3 Answers. The fact that ReadOnlyCollection is immutable means that the collection cannot be modified, i.e. no objects can be added or removed from the collection.
Can you add to readonly list C#?
Real readonly lists in C# With a list, you can still add, remove and change items in the list.
How do I make a collections file read-only?
We can make Collections object Read-Only by using unmodifiableCollection() and to make Map Read-Only we can use unmodifiableMap() method. This method accepts any of the collection objects and returns an unmodifiable view of the specified collection.
How do I make a collection thread safe?
A thread-safe variant of ArrayList in which all mutative operations (e.g. add, set, remove..) are implemented by creating a separate copy of underlying array. It achieves thread-safety by creating a separate copy of List which is a is different way than vector or other collections use to provide thread-safety.
How do I make a list read only?
In Java, you can use Collections. unModifiableList() method to create read-only List, Collections. unmodifiableSet() for creating read-only Set like read-only HashSet and similarly creating a read-only Map in Java, as shown in below example. Any modification in the read-only List will result in java.
Can we make ArrayList read only?
An ArrayList can be made read-only easily with the help of Collections. unmodifiableList() method. This method takes the modifiable ArrayList as a parameter and returns the read-only unmodifiable view of this ArrayList.
Does immutable mean read-only?
A read-only object is an object that does not expose any way to change it. ReadOnlyCollection (returned by AsReadOnly() ) is a good example). However, IEnumerable is also read-only.