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Today I came across a dilemma what is the difference between ReadOnlyCollection<T> and ReadOnlyCollectionBuilder<T> in .Net?
In ReadOnlyCollection<T> object we cannot add and remove items.
Where as in ReadOnlyCollectionBuilder<T> object we can add and remove items.
If we can add and remove items in ReadOnlyCollectionBuilder<T> object, then why the name readonly?
As per the documentation,
ReadOnlyCollectionBuilderis just a builder for read-only collections. The idea is that the builder is mutable, but would only be used in a small scope. You’d create a builder, add a load of elements, then callToReadOnlyCollectionto efficiently create a read-only view on the data. (This resets the builder, so you avoid the possibility of mutating the read-only collection after creation.)