For those programmers who are beyond [Beginning Tcl], and would really like to
exploit some of the power of the Tcl language and/or the Tk Toolkit, here is a
list of pages describing some advanced concepts.

This is a grab bag of new ideas that you might one day find useful.  It isn't
indexed to help you solve specific problems.  Just read through it for ideas.
Come back later for a refresher when you want to try them out.

** Tcl Concepts **

   [Building Tcl extensions]:   
   [package management]:   
   [Tcl Performance]:   
   [Regular Expressions]:   
   [Arrays / Hash Maps]:   
   [String Processing]:   
   Variable [Traces]:    when are they useful?
   [How can I compile Tcl type scripts into binary code]:   ?
   [Meta Programming]:   
   [Sendmail]:   Sockets demonstration using an all-Tcl
   [Tcl data types]:   
   [Serial Port]:   How to control a physical device
   [Introspection]:   
   [Radical Language Modification]:   
   [What should I be sure to do so my Tcl based programs run cross platform]:   ?
   [How do I manage lock files in a cross platform manner in Tcl]:   ?
   [http://www.wjduquette.com/tcl/objects.html%|%Will's Guide to Creating Object Commands]:   
   [http://users.pandora.be/koen.vandamme1/papers/tcl_objects/tcl_objects.html%|%Objects in Tcl ]:   
   [Interacting with the internet]:   
   [Interacting with databases]:   
   [New Control Structures]:   
   [http://users.pandora.be/koen.vandamme1/papers/tcl_fileformats/tcl_fileformats.html%|%Data files in Tcl]:   simple tricks to parse text files
   [Tcl Handles]:   passing C pointers around in Tcl
   [How can I add a new option to an existing Tcl command]?:   
   [Data is code]:   
   [paragraphing]:   


** Tk Concepts **

   [Tk Performance]:   
   [Entry Field Processing]:   
   [Event Processing]:   
   [Drag-N-Drop Example%|%Poor Man's Drag-N-Drop]:   by Bryan Oakley
   [Geometry Managers]:   
   [Practical Guide to Choosing Fonts]:   
   [Grab Tips]:   for when you want to redirect events from one window to another
   [http://www.cs.man.ac.uk/~fellowsd/tcl/option-tutorial.html%|%Option Database Tutorial]:   a great way of getting user-configurable and localizable applications
   [Adding User Data to Widgets the Megawidget Way]:   
   [Tk image Dos and Don'ts]:   
   [Cross Platform differences in Tcl/Tk]:   


** Interfacing with C **

   [Hello World as a C extension]:   
   [Writing Extensions]:   
   [Critcl builds C extensions on-the-fly]:   
   [Pointer clean-up!]:   from [PSE]
   [Blessed Tcl_Obj Values]:   [DKF]:  how to make that struct full of pointers be passable through Tcl while ''guaranteeing'' that no loose references can be generated
   [How do I use the Tcl C API?]:   


** Misc **

   [Bag of algorithms]:   
   [Bag of Tk algorithms]:   
   [Bag of number/time spellers]:   
   [Example scripts everybody should have]:   
   [Braintwisters]:   
   [Tcl gems]:   
   [When should Tcl/Tk/etc. NOT be used]?:   
   [Halting Problem]:   Tcl-style
   [Tk in a set-userid application]:   
   [How do I report a bug in Tcl, Tk, ...]?:   
   [Incr Tcl Design Patterns]:   

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