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In this chapter you have learned about all the basic datatypes available in JScript .NET, along with quite a few of the object types that are available through the CLR. Services are provided in two locations in JScript .NET: through the JScript .NET language and through the CLR, which hosts the JScript .NET language while it is running. You'll make use of both of these services throughout the book because they are both important to effective .NET programming.

New performance-oriented options are available in JScript .NET. For example, if you strongly type code, compile-time warnings appear if a variable assignment is inappropriate. You can also use bounded arrays through the CLR, as opposed to the JScript .NET dynamic arrays. Bounded arrays offer more performance than dynamic arrays, but dynamic arrays offer more functionality and are more convenient.

In this chapter you learned how to use strings and how the new StringBuilder class can provide great memory usage and speed improvements when you're building long strings from many smaller parts.

In Chapter 4, "Operators and Commenting," you'll learn about the various operators available in JScript .NET, including the arithmetic, assignment, comparison, Boolean, and bitwise operators. You'll also learn about some of the object-oriented operators that allow you to create new instances of objects and find out what type of object you're working with.

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