List of Examples
List of Tables
Preface
Tcl BASICS
Tcl Fundamentals
Tcl Commands
Hello, World! Variables
Command Substitution
Math Expressions
Backslash Substitution
Grouping with Braces and Double Quotes
Procedures
A Factorial Example
More about Variables
More about Math Expressions
Comments
Substitution and Grouping Summary
Fine Points
Reference
Getting Started
The source Command
UNIX Tcl Scripts
Windows Start Menu
Macintosh OS 8/9 and ResEdit
The console Command
Command-Line Arguments
Predefined Variables
The Guestbook CGI Application
A Quick Introduction to HTML
CGI for Dynamic Pages
The guestbook.cgi Script
Defining Forms and Processing Form Data
Handling Errors in CGI Scripts
Next Steps
String Processing in Tcl
The string Command
The append Command
The format Command
The scan Command
The binary Command
Related Chapters
Tcl Lists
Tcl Lists
Constructing Lists
Getting List Elements: llength, lindex, and lrange
Modifying Lists: linsert and lreplace
Searching Lists: lsearch
Sorting Lists: lsort
The split Command
The join Command
Related Chapters
Control Structure Commands
If Then Else
Switch
While
Foreach
For
Break and Continue
Catch
Error
Return
Procedures and Scope
The proc Command
Changing Command Names with rename
Scope
The global Command
Call by Name Using upvar
Variable Aliases with upvar
Tcl Arrays
Array Syntax
The array Command
Building Data Structures with Arrays
Working with Files and Programs
Running Programs with exec
The file Command
Cross-Platform File Naming
Manipulating Files and Directories
File Attributes
Input/Output Command Summary
Opening Files for I/O
Reading and Writing
The Current Directory cd and pwd
Matching File Names with glob
The exit and pid Commands
Environment Variables
The registry Command
Advanced Tcl
Quoting Issues and Eval
Constructing Code with the list Command
Exploiting the concat inside eval
The uplevel Command
The subst Command
Regular Expressions
When to Use Regular Expressions
Regular Expression Syntax
Advanced Regular Expressions
Syntax Summary
The regexp Command
The regsub Command
Transforming Data to Program with regsub
Other Commands That Use Regular Expressions
Script Libraries and Packages
Locating Packages: The auto_path Variable
Using Packages
Summary of Package Loading
The package Command
Libraries Based on the tclIndex File
The unknown Command
Interactive Conveniences
Tcl Shell Library Environment
Coding Style
Reflection and Debugging
The clock Command
The info Command
Cross-Platform Support
Tracing Variables and Commands
Interactive Command History
Debugging
Tcl Dev Kit
Other Tools
Performance Tuning
Namespaces
Using Namespaces
Namespace Variables
Command Lookup
Nested Namespaces
Importing and Exporting Procedures
Callbacks and Namespaces
Introspection
The namespace Command
Converting Existing Packages to use Namespaces
[incr Tcl] Object System
xotcl Object System
Notes
Internationalization
Character Sets and Encodings
Message Catalogs
Event-Driven Programming
The Tcl Event Loop
The after Command
The fileevent Command
The vwait Command
The fconfigure Command
Socket Programming
Networking Extensions for Tcl
Client Sockets
Server Sockets
The Echo Service
Fetching a URL with HTTP
The http Package
Basic Authentication
TclHttpd Web Server
Int