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Tips and short articles on this subject
split and join in tcl and expect
What are Tcl lists?
Replacing the last comma with an and
Sorting in Tcl - lists and arrays
Tcl - append v lappend v concat
Stable sorting - Tcl, Perl and others
Generating traffic for network testing
Stringing together Tcl scripts
Tcl - lappend v concat
Splitting the difference
Tcl sandwich - lists in Tcl
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Tcl/Tk module T206
Lists
Exercises, examples and other material relating to training module T206. This topic is presented on public courses Learning to program in Tcl, Tcl Basics

Tcl Programming - The Tcl programming language, and Expect This course covers the fundamentals of the Tcl programming language. You'll learn about Tcl ...
http://www.wellho.net/course/tbfull.html  [course]
Learning to Program in Tcl - The Tcl programming language, and Expect This course covers the fundamentals of the Tcl programming language. You'll learn ...
http://www.wellho.net/course/tlfull.html  [course]
Should you use append, lappend or even concat to add to variable in Tcl? append puts one string directly on the end of another, without adding any extra ...
http://www.wellho.net/mouth/1402_Tcl ... oncat.html  [short article]
Tcl's lsort command lets you sort a list - and that can be a list of the keys of an array. You can't sort the array, but once you have the list of keys ...
http://www.wellho.net/mouth/1405_Sor ... rrays.html  [short article]
Split and join in most languages convert strings of text into arrays / lists / collections of other sorts. But in Tcl, all variables are held as strings, ...
http://www.wellho.net/mouth/2472_spl ... xpect.html  [short article]
In Tcl, you can use the lappend command to add items on to a list, but it doesn't always do exactly what you wish it to. Let's say that I've got two ...
http://www.wellho.net/mouth/781_Tcl- ... oncat.html  [short article]
In Tcl, all variables (except 'arrays') are held as strings of text - and that includes lists. A list is a string which is treated as a collection of ...
http://www.wellho.net/mouth/2468_Wha ... ists-.html  [short article]

A variable might contain a series of words and, if it does, it can be treated in a special way, as a list through which your program can iterate. This module describes how such lists are handled, and goes on to cover list-related commands. Several sample programs show you how to make best use of lists.

This topic is presented on public courses Learning to program in Tcl, Tcl Basics

Examples from our training material
acr2   Treating lines of data read from file as a list
days   A list of days
fido   Open and read a file line by line
pk4.tcl   Generate a series packet sizes for network testing
stdlook   Look up Florida dialling codes
Background information
This module is available under an Open Training Notes License for free download from http://www.training-notes.co.uk.
Topics covered in this module
How lists are handled in Tcl.
List-related commands.
Creating and modifying lists.
Extracting information from a list.
Manipulating lists to create other lists.
Sample programs using lists.
Reading an access log file.
Complete learning
If you are looking for a complete course and not just a information on a single subject, visit our Listing and schedule page.

Well House Consultants specialise in training courses in Tcl/Tk, Expect,Python, Perl, PHP, and MySQL. We run Private Courses throughout the UK (and beyond for longer courses), and Public Courses at our training centre in Melksham, Wiltshire, England. It's surprisingly cost effective to come on our public courses - even if you live in a different country or continent to us.

We have a technical library of over 700 books on the subjects on which we teach. These books are available for reference at our training centre. Also available is the Opentalk Forum for discussion of technical questions.


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