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A High-Level Overview
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One way to get a quick overview of the .NET Framework and the F# library is to simply look at the primary DLLs and namespaces contained in them. Recall from s 2 and 7 that DLLs correspond to the physical organization of libraries and that namespaces and types give the logical organization of a naming hierarchy. Let s look at the physical organization first. The types and functions we cover in this chapter are drawn from the DLLs in Table 10-1.
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Table 10-1. DLLs Containing the Library Constructs Referred to in This
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mscorlib.dll System.dll System.XML.dll System.Data.dll System.Drawing.dll System.Web.dll System.Windows.Forms.dll System.Query.dll
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Minimal system constructs including the types in the System namespace. Additional commonly used constructs in namespaces such as System and System.Text. See the corresponding namespace in Table 10-2. See the corresponding namespace in Table 10-2. See the corresponding namespace in Table 10-2. See the corresponding namespace in Table 10-2. See the corresponding namespace in Table 10-2. The foundation types for LINQ. From .NET 3.5 onward.
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CHAPTER 10 US IN G THE F# A ND .NE T LIBRARIES
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Table 10-1. DLLs Containing the Library Constructs Referred to in This (Continued)
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FSharp.Core.dll FSharp.Compatibility.dll
Notes
Minimal constructs for F# assemblies. Called fslib.dll in earlier versions of F#. Called mllib.dll in earlier versions of F#.
All of these DLLs except System.Query.dll are referenced automatically from F# projects. To reference additional DLLs, you can embed a reference directly into your source code. For example: #I @"C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5;; #r "System.Query.dll";; The first line specifies an include path, the equivalent of the -I command-line option for the F# compiler. The second line specifies a DLL reference, the equivalent of the -r commandline option. We described these in 7. If you re using Visual Studio, you can adjust the project property settings for your project.
Note Hundreds of high-quality frameworks and libraries are available for .NET, and more are appearing all the time. For space reasons, this chapter covers only the .NET libraries and frameworks listed in Table 10-1. In the Some Other .NET Libraries section of this chapter, we list some libraries you might find interesting, and you can see more resources for finding .NET libraries at http://www.expert-fsharp/Topics/ Libraries.
Namespaces from the .NET Framework
Table 10-2 shows the primary namespaces in .NET Framework DLLs from Table 10-1. In some cases, parts of these libraries are covered elsewhere in this book. We ve noted these cases in the table. For example, 4 introduced portions of the .NET I/O library from the System.IO namespace.
Table 10-2. Namespaces in the DLLs from Table 10-1, with MSDN Descriptions
Namespace
System
Description
Types and methods that define commonly used value and reference data types, events and event handlers, interfaces, attributes, and processing exceptions, supporting data-type conversions, mathematics, application environment management, and runtime supervision of managed and unmanaged applications. See 3 for many of the basic types in this namespace. Types that can be used to represent the elements and structure of a source code document. Not covered in this book.
System.CodeDom
CHAPTER 10 US IN G THE F# A ND .NE T LIBRARIES
Table 10-2. Namespaces in the DLLs from Table 10-1, with MSDN Descriptions (Continued)
Namespace
System.Collections
Description
Types that define various nongeneric collections of objects, such as lists, queues, and bit arrays. Partially covered in the section Using Further F# and .NET Data Structures later in this chapter. Types that define generic collections. See 4 and the section Using Further F# and .NET Data Structures later in this chapter. Types that are used to implement the runtime and designtime behavior of components and controls. See 11. Types that provide the programming model for handling configuration data. See 15. Types that represent the ADO.NET database access architecture. See 15. Types that allow you to interact with system processes, event logs, and performance counters. See 18. Types that allow access to GDI+ basic graphics functionality. More advanced functionality is provided in the System. Drawing.Drawing2D, System.Drawing.Imaging, and System. Drawing.Text namespaces. See 11. Types that define culture-related information, including the language, the country/region, the calendars in use, the format patterns for dates, the currency, the numbers, and the sort order for strings. Not covered in this book. Types that allow reading and writing files and data streams, as well as types that provide basic file and directory support. See 4 for a basic overview. Types for playing and accessing sounds and other media formats. Not covered in this book. .NET 3.0 and later. Types to programmatically access many of the protocols used on modern networks. See s 2 and 14 for examples and a basic overview. Types that retrieve information about assemblies, modules, members, parameters, and other entities in managed code. See 9 for a brief overview. Types for generating .NET code dynamically at run time. Types that allow developers to create, store, and manage various culture-specific resources used in an application. See s 7 and 11 for a brief overview. Types to interface with the underlying structure of the CLR security system, including base classes for permissions. Not covered in this book.
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