In this chapter you’ll:

• Learn about additional .NET generic collections.

• Manipulate arrays with class Array’s static methods.

• Provide a using static directive to access a class’s static members without fully qualifying their names.

• Iterate through a collection with enumerators.

• Use generic collections SortedDictionary and LinkedList.

• Use the C# 6 null-conditional ?[] operator to access array or collection elements.

• Use C# 6 index initializers to initialize a dictionary.

• Store method references in delegate variables, then use those variables to invoke the corresponding methods.

• Use lambda expressions to create anonymous methods and refer to those methods via delegate variables.

• Use LINQ method-call syntax and lambdas to demonstrate functional programming techniques.

• Parallelize LINQ operations with PLINQ for multicore performance.

• Learn covariance and contravariance for generic types.