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Predefined Variables
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Practical Programming in Tcl & Tk, Third Edition
By Brent B. Welch
Table of Contents
Chapter 2. Getting Started
Table 2-2. Variables defined by
tclsh
and
wish
.
argc
The number of command-line arguments.
argv
A list of the command-line arguments.
argv0
The name of the script being executed. If being used interactively,
argv0
is the name of the shell program.
embed_args
The list of arguments in the
<EMBED>
tag. Tcl applets only. See page 298.
env
An array of the environment variables. See page 117.
tcl_interactive
True (one) if the
tclsh
is prompting for commands.
tcl_library
The script library directory.
tcl_patchLevel
Modified version number, e.g., 8.0b1.
tcl_platform
Array containing operating system information. See page 182.
tcl_prompt1
If defined, this is a command that outputs the prompt.
tcl_prompt2
If defined, this is a command that outputs the prompt if the current command is not yet complete.
tcl_version
Version number.
auto_path
The search path for script library directories. See page 162.
auto_index
A map from command name to a Tcl command that defines it.
auto_noload
If set, the library facility is disabled.
auto_noexec
If set, the auto execute facility is disabled.
geometry
(
wish
only). The value of the
-geometry
argument.
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Practical Programming in Tcl and Tk (4th Edition)
ISBN: 0130385603
EAN: 2147483647
Year: 1999
Pages: 478
Authors:
Brent Welch
,
Ken Jones
BUY ON AMAZON
An Introduction to Design Patterns in C++ with Qt 4
Inline Functions
Derivation from an Abstract Base Class
Code Containers
Serializer Pattern
Dialogs
Information Dashboard Design: The Effective Visual Communication of Data
A Timely Opportunity
Tapping into the Power of Visual Perception
Summary
Sample CIO Dashboard
A Final Word
PMP Practice Questions Exam Cram 2
Exam Prep Questions
Project PlanningCore Processes
Exam Prep Questions
Exam Prep Questions
Exam Prep Questions
Comparing, Designing, and Deploying VPNs
Benefits and Drawbacks of L2TPv3-Based L2VPNs
Advantages and Disadvantages of MPLS Layer 3 VPNs
Scaling and Optimizing IPsec VPNs
Benefits and Drawbacks of L2TP Remote Access VPNs
VBScript in a Nutshell, 2nd Edition
VBScripts History and Uses
Classes
What Can You Do with Client-Side Scripting?
Section B.1. Color Constants
Appendix C. Operators
Python Programming for the Absolute Beginner, 3rd Edition
Current Working Directory
Python GUI Development Options
The End of the Tutorial
Binary Search Trees
Sorting Sequences
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