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Essential Tools Module User's Guide

2.2 Class Groups

The Essential Tools Module classes are grouped into eleven sets of classes:

This manual is organized to reflect these class groups. This section summarizes the classes in each of these groups. A list of the classes that are in each group are at the start of each class group chapter in this manual (Chapter 3 through Chapter 7), and in Chapter 2 of the Essential Tools Module Reference Guide.

2.2.1 Date and Time Classes

Classes in the Date and Time Classes group let you perform tasks such as calculating the number of days between two dates, calculating the day of the week a date represents, or reading and writing days or times in arbitrary formats.

Chapter 3 explains the Date and Time Classes.

2.2.2 String Processing Classes

Classes in the String Processing Classes group let you perform string processing operations such as manipulating single and multibyte strings with class RWCString's full suite of operators and functions, or choosing class RWWString for wide character strings. These classes make it easy to do concatenation, comparison, indexing (with optional bounds checking), I/O, case changes, stripping, and many other functions.

Chapter 4 explains the String Processing Classes.

2.2.3 Virtual Stream Classes

Classes in the Virtual Stream Classes group let you perform streaming operations such as transferring information between operating systems with the efficiency of a binary stream. The endian streams mechanism, which keeps a record of the operating environment where information originates, allows the stream to be read on any system regardless of its native size or byte order.

Chapter 5 explains the Virtual Stream Classes.

2.2.4 Collection Classes

The Essential Tools Module is a rich, robust, and versatile C++ foundation class library that offers over 58 collection classes, including 38 template-based collections and 20 Smalltalk-like collections. In addition, 20 iterators make it simple to traverse the items of a collection. Collection classes range from simple single- or double-linked lists to sophisticated structures like hash dictionaries and B-trees.

The Essential Tools Module includes four collection class groups:

Chapter 6 explains the Collection Classes.

2.2.5 Internationalization Classes

Classes in the Internationalization Classes group let you internationalize your software with the convenient and easy-to-use framework of class RWLocale and RWAnsiLocale, and use class RWZone to manipulate time zones and daylight-saving time. With the exception of class RWBasicUString designed to handle 16-bit Unicode characters, the library is eight-bit clean, so you can use it with any eight-bit character set.

Chapter 8 explains the Internationalization Classes.

2.2.6 File System Classes

Classes in the File System Classes group let you work with things such as ordered collections of associations of keys and values, fixed length blocks to and from an associated RWFile, page heaps, encapsulated binary file operations, and disk allocation.

Chapter 11 explains the File System Classes.

2.2.7 Miscellaneous Classes

Classes in the Miscellaneous Classes group let you work with things such as automatic benchmarking, Model-View-Controller architecture, and elapsed time. The Essential Tools Module Reference Guide explains the Miscellaneous Classes.

2.2.8 Generic Classes (deprecated)

Classes in the Generic Classes group let you work with bit vectors, groups of ordered elements, singly and doubly linked lists, ordered collections of objects, and vectors of elements.

All of the classes in this group are deprecated; alternatives to each class are listed in each class description. Chapter 7 explains the Generic Classes.

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