string[] names = { "John", "Amy", "Peter", "Rachel" }; IndexindexNames = names.ToIndex(); string newName = "Jack"; indexNames = indexNames.AddToIndex(newName);
ListThis example creates an index of integer numbers, then adds a new number "6" to the index using the AddToIndex method. The Index AddToIndex method is included in the System.Collections.Immutable NuGet package library.numbers = new List { 1, 2, 3, 4, 5 }; Index indexNumbers = numbers.ToIndex(); int newNumber = 6; indexNumbers = indexNumbers.AddToIndex(newNumber);