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Upcoming Tcl, Expect, Tk courses ...
Learning to program in Tcl and Expect
Tcl and Expect programming
The Tk Toolkit

Tips and short articles on this subject
Tcl - passing arrays and strings in and back out of procs
When an array is not an array
Arrays in Tcl - a demonstration
Sorting in Tcl - lists and arrays
Generating traffic for network testing
Stringing together Tcl scripts
The fragility of pancakes - and better structures
Passing arrays to procs in Tcl
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Tcl/Tk module T208
Arrays
Exercises, examples and other material relating to training module T208. 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]
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]
When you want to pass data INTO a proc in Tcl from a regular variable, you write the variable name with a $ in front of it in the code and the value is ...
http://www.wellho.net/mouth/2466_Tcl ... procs.html  [short article]
If you're writing a Tcl proc, you'll normally pass in parameters by value, specifying a $ in front of the variable whos contents you want to pass in in ...
http://www.wellho.net/mouth/122_Pass ... n-Tcl.html  [short article]
#!/usr/bin/tcl set capital(France) Paris set capital(Spain) Madrid set capital(Ireland) Dublin set capital(U.S.A.) Washington set capital(England) London ...
http://www.wellho.net/resources/ex.php4?item=t208/ar2  [code sample]
An array, I was taught, is a sequential series of memory locations in which values of some type are stored. In an array, each of the memory locations ...
http://www.wellho.net/mouth/1614_Whe ... array.html  [short article]

Arrays are variables that can contain a number of strings, and each one can be looked up by its index and key. Unlike arrays in other languages, array keys in Tcl are strings, not integers, and array members can contain strings of differing lengths. You'll start this module learning about the basics of arrays, and go on to learn some of the wider uses and extra power that's provided by their somewhat unusual specification, taught by example.

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

Examples from our training material
ar1   First use of arrays
ar2   Checking if an array key exists
ar3   looping though an array with array get
arr_log   Access log counter using arrays
arr_log_2   Selecting elements from an array - glob matching to keys
arr_log_3   Passing arrays in and out of procs - using upvar
ifinder   search for icon references; list icon names
ifinder2   search for icon references and count them
stfinal   final exercise - array of dialling codes
topskill   setting up an array of lists, sorting, listing out elements
Pictures
Arrays in Tcl
A small group learns Tcl on a private course
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 http://www.training-notes.co.uk.
Topics covered in this module
Syntax, definition and indices.
Information about arrays.
Wider range of array commands.
Uses of arrays.
Building more complex data structures.
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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