Exercises, examples and other material relating to training module T202. This topic is presented on public courses
Learning to program in Tcl,
Tcl Programming,
Tcl Programming
Starting with a first program ("Hello World" in Tcl), we move on to cover command syntax and grouping with quotes, brackets and braces. Amongst the most important commands covered at this early stage are those that let you read from the keyboard, write to the screen and create, display and perform basic operations on variables.
Related technical and longer articles
Brackets and Braces in Tcl
Examples from our training material
anno | A trivial Tcl program with comments |
anno2 | Comments - inline and continuations |
gr2 | Double quote substitution in Tcl |
greet | Reading from the user in Tcl |
gry | Variables in Tcl - first use |
hddh | Hexadecimal to decimal, and decimal to hex, in Tcl |
pricer | Completed simple application in Tcl - pricing tickets |
Pictures
Tcl trainees come from far and wide
Square brackets and braces in Tcl
Background information
Some modules are
available for download as a sample of our material or under an
Open Training Notes License for free download from
[here].
Topics covered in this module
Hello World.
Running environment.
source.
Structure of Tcl Commands.
Running from the command line.
Integration into your system.
Step 1 - First line.
Step 2 - Mark the program as being executable.
Step 3 - Ensure that your program is on the "PATH"..
The comment command and more syntax.
Comments.
More flexible command syntax.
Variables.
Setting up variables.
Referencing variables.
Variable substitution using double quotes.
Reading Input.
fileIds.
Command substitution.
flushing.
The expr command.
Integer v float.
Complete learning
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