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D E L E G AT E S, E V E N T S, A N D   L A M B D A S

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Indexers, Operators, and Pointers

I

n this chapter, you’ll deepen your understanding of the C# programming language by examining

a handful of advanced syntactic constructs. To begin, you’ll learn how to construct and use an

indexer method. This C# mechanism enables you to build custom types that provide access to inter-

nal subtypes using an array-like syntax. Once you learn how to build an indexer method, you’ll then

examine how to overload various operators (+, -, <, >, and so forth), and how to create custom

explicit and implicit conversion routines for your types (and you’ll learn why you may wish to

do so).

The remainder of this chapter examines a small set of lesser used (but nonetheless interesting)

C# keywords. For example, you’ll learn how to create an “unsafe” code context in order to directly

manipulate pointer types using C# and make use of various preprocessor directives.