Preface
Created in 1988 by John Ousterhoult, while working at the University of Califormia, Berkeley,
Tcl (Tool Command Language) is a scripting language originally designed for embedded system
platforms. Since its creation, Tcl has grown far beyond its original design with numerous
expansions and additions (such as the graphical Took Kit or Tk) to become a full-featured
scripted programming language capable of creating elegant, cross-platform solutions.
This book is written for both the beginning developer looking for a instructions on how to get
their application up and running quickly to the experienced Tcl/Tk programmer looking to
sharpen their skills. You will nd everything from utilization of the console commands through
to the creation of a stand-alone application.
What this book covers
Chapter 1, The Tcl Shell, gives an introduction to the Tcl shell.
Chapter 2, Using the Building Blocks Control Constructs, talks about using control
constructs (if statements, for statements, and so on) to perform control program ow.
Chapter 3, Error Handling, talks about using the built-in commands and the Tcl shell to
perform error handling.
Chapter 4, Handling String Expressions, explains how to create, manipulate, and manage
string variables.
Chapter 5, Expanding String Functionality Using List, shows how to create, manipulate,
and manage data in Tcl lists.
Chapter 6, The Tcl Dictionary, explains how to create, manipulate, and manage data in Tcl
dictionaries.
Chapter 7, File Operations, tells how to open, read, write, and congure access to les stored
on the system.
Chapter 8, Tk GUI Programming with Tcl/Tk, gives an introduction to the Tk shell, creating
and managing a widget or window.
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