Tcl'Europe 2002 State of Tcl

1
The (Active) State of Tcl
2
The (Active) State of Tcl

• Jeff Hobbs
• ActiveState Corporation

3
Agenda

• Introduction
• What has happened
• Developments in the Tcl community
• Developments of the Tcl/Tk core
• Future directions

4
About ActiveState

• ActiveState provides multi-language,
  cross-platform software services
• Tcl, Perl, PHP, Python, XSLT
• Linux, Solaris, Windows, HP-UX, AIX,
• We make it easy to use new technologies
• Web Services and .NET
• Mission Make Programming Easier
• Our IDEs
• Active distributions
• ASPN

5
History of Tcl
7. ActiveState introduces Tcl support and services
1. Tcl created as general-purpose
command/scripting language by John Ousterhout

• 4. Scriptics formed
• Evolve and extend Tcl platform
• Create development tools

8.0 Aug
6.0 Sept
7.0 Sept
7.4 July
7.6 Oct
8.1 Apr
8.3 Feb

1988
1989
1990
1991
1992
1993
1995
1997
1998
1994
1999
1996
2000
2001
8.2 Aug
5. Tcl Core Team formed (August)

• 2. Open source distributions
• from U.C. Berkeley
• Easy GUIs under Unix
• Extensible applications

6. Scriptics/Ajuba Acquired by Interwoven (Nov.)

• 3. Tcl enhanced at Sun Microsystems
• Windows, Macintosh ports
• Web/Internet support
• Java support

1M ?
100
1000
10,000
100,000
500,000
6
Recent History of Tcl
6. ActiveState introduces Tcl support and
services (Feb)
1. Tcl2K in Austin (Feb)
2. Scriptics becomes Ajuba (May)
9. 8th Tcl Conference (July)
( 8.4.0 )
8.3.1 Apr
8.3.2 Aug
8.3.3 May
8.4a3 Mar
2000
2001
2002
8.4a3 July
8.3.0 Feb
8.4a1 June
8.4a2 Nov
8.3.4 Oct
8.4b1
7. TclEurope 2001 (June)
3. TclEurope 2000 (June)
10. ActiveState TclPro (Dec)
11. ActiveTcl 8.3.4.3 (July)
5. Scriptics/Ajuba acquired by Interwoven Tcl/Tk
core moves to SourceForge TclPro open sourced
(Nov.)
4. Tcl Core Team formed (August)
12. ActiveState TclPro 2.0 beta (July)
7
Tcl Usage

• Tcl usage is still growing
• Used extensively for mission-critical
  applications
• Cisco, Motorola, Lucent, Nortel, etc.
• Automated hardware testing
• Coordinate different pieces of test equipment
• Tcl soon to be standard on all Cisco routers
• AOL Digital City, Travelocity
• Dynamic Web content
• Integrate information from different sources
• Content developers are not programmers

8
Tcl Usage, Contd

• More mission-critical applications
• NBC
• Digital broadcast control system
• Mix programming content, control transmission
  through satellites to local stations
• Pixar
• Used in animation tools (RenderMan software)
• Technical directors write Tcl scripts to animate
  characters
• Shell Oil
• Real-time control for offshore oil platforms
• Coordinate, manage various systems

9
Status As of 8th Tcl Conference

• At OReilly Open Source Convention,San Diego,
  July 2001
• Tcl/Tk 8.3.3 was the stable version (8.3.x now
  standard in Linux distributions)
• 8.4a3 was just released
• ActiveState was just establishing with Tcl
  expertise

10
Tcl Core Team

• Formed in August 2000 with 14 charter members
  based on community voting to collectively manage
  development of the core

11
TCT TIP Initiatives

• TIP page for Tcl http//www.tcl.tk/cgi-bin/tct/ti
  p/
• TIPs are intended to guide and document
  development on the core
• The focus is on new or changing features, not
  bugs
• Voted on by the TCT following community
  discussion using the TYANNOTT process
• Currently over 100 TIPs
• Divided into process, informational project
  TIPs
• TCT discussion is open on the public mailing
  list tcl-core_at_lists.sourceforge.net

12
Tcl/Tk Maintainers

• Tcl/Tk maintainers are separate from the TCT
• Maintainers oversee a specific area of the core,
  as defined in TIP 16 for Tcl and TIP 23 for Tk
• They assist, but are not solely responsible for,
  fixing bugs and adding documentation in their
  area
• They are responsible for reviewing code and
  approving code changes to their area
• Open to anyone willing to learn the core
• New volunteers always welcome

13
The Maintainers

• Tcl (TIP 24)
• Tk (TIP 30)
• Other contributors as well

14
Scriptics/Ajuba

• Scriptics became Ajuba Solutions in May 2000
• New focus as a B2B infrastructure company
• Interwoven content management company in need of
  B2B
• Ajuba assimilated on Nov 1, 2000
• Tcl/Tk moved to SourceForge http//tcl.sf.net/
• Further open source work not continued at
  Interwoven
• Most other projects at Ajuba moved to SourceForge

15
Tcl/Tk at SourceForge

• SourceForge provides a wealth of services for
  open source projects
• Bug and patch database
• Mailing lists
• CVS repositories
• File server
• Web pages
• Managed by TCT and Tcl/Tk maintainers
• Not the Tcl Developer Xchange

16
Tcl _at_ ActiveState

• ActiveState established 1997
• Programming for the People
• Used to be Perl specific
• Well known ActivePerl distribution
• Added Python and XML/XSLT expertise in 2000
• Jeff Hobbs hired in Feb 2001
• Andreas Kupries follows soon after
• Other knowledgeable Tclers on staff
• Wealth of scripting knowledge at ActiveState

17
ActiveState and Tcl

• ActiveState provides the Tcl community with
• Improvements to open source Tcl core
• Host of the Tcl Developer Xchange
• Commercial support infrastructure
• http//www.ActiveState.com/Products/Enterprise/Tcl
  Direct/
• Professional services for Tcl (TclDirect)
• High quality development tools
• ActiveTcl
• http//aspn.ActiveState.com/ASPN/Tcl/
• ASPN Tcl (TclPro Komodo IDE)
• http//www.ActiveState.com/Products/ASPN_Tcl/

18
ActiveTcl 8.3.4.3

• Based on the 8.3.4 Tcl core
• Enhanced with several popular extensions
• incr Tcl, TclX, expect, tcllib, Bwidgets,
  iwidgets, tktable, tkcon
• A standard batteries-included distribution for
  Tcl users
• Code repository (still) in the works

19
Tcl Developer Xchange
20
Tcl Cookbook
21
ASPN Tcl TclPro More

• Introduced December 2001
• Resuscitated TclPro as a commercial quality
  development environment
• Debugger source-level debugger with nice GUI
• Checker find errors without running application
• Wrapper create self-contained applications for
  distribution
• Compiler protect your source code

22
ASPN Tcl Komodo

• An IDE for scripting languages
• Mozilla framework based
• Cross-platform (Windows Linux)
• Modern IDE features
• Several unique Tcl editing features
• Tight integration of TclPro tools with Komodo
• Komodo 2.0 in development

23
Komodo IDE
24
ASPN Tcl Future

• Continuing development of Tcl tools
• TclPro 2.0 now in beta
• Enhanced debugger with integrated checker
• Code coverage and hot-spot analysis tool
• Added user-friendly GUIs to Wrapper and Compiler
• Checker updated for 8.4 (and corrected for 8.3)
• GUI Builder in development
• Based loosely on SpecTcl
• Will be integrated with other tools

25
In the Community

• The Tclers Wiki has increased in activity
• http//wiki.tcl.tk/
• Now with interactive chat
• The Tcl Developer Xchange official URL
• http//www.tcl.tk/
• http//tcl.ActiveState.com/
• Tcl-URL! continues to provide weekly news
• http//www.ddj.com/topics/tclurl/
• Or subscribe to tcl-announce_at_listserv.activestate.
  com
• Lots of extension updates

Check out the wiki!
26
Tcl/Tk Today

• Download rate steady
• Windows 55
• Unix 40
• Mac 5
• Only patch releases since 2000
• Stable release now at 8.3.4
• Completely new I/O core (added in 8.3.2)
• High degree of stability
• Improved locale support in Tk
• Ports now exist for Windows/CE and Palm

ActiveTcl downloads

• Data point
• 2x ActivePython d/ls
• 1/7th ActivePerl d/ls

27
Tcl/Tk 8.4

• Development release, now at 8.4b1-rc
• Has just been feature-frozen
• New spinbox, labelframe, panedwindow widgets
• Several core feature enhancements
• VFS, lset, command tracing
• Significant work on performance
• Near or better than 8.0, with unicode and thread
  safety.
• Inclusion of numerous TIPs
• More later in 8.4 overview

28
User Poll Versions

• Versions in use
• Pre-8.0
• 8.0
• 8.2
• 8.3
• 8.4

• Response (out of 65)
• 0
• 8
• 1
• 64
• 6

29
User Poll Platforms

• Develop/Deploy
• Windows
• Macintosh OS 9
• Macintosh OS X
• Linux
• Solaris
• HP-UX
• Other unix

• Response (out of 65)
• 60/30
• 0/2
• 0/1
• 50/50
• 8/30
• 6/10
• 8

30
TclEurope 2001

• Hamburg, June 8-9, 2001
• 14 Original papers and tutorials
• From using Tcl with Cobol to Tcl on the
  Web to Tcl on a PDA
• Thanks to Carsten Zerbsthttp//www.tu-harburg.de
  /skf/tcltk/

31
Future Directions

• The core is guided by community input
• Anyone can write a TIP
• Anyone can be a core maintainer
• What issues are most pressing?
• ActiveState will continue to work with the Tcl
  community and build more Tcl related products
• Demos to follow

32
Ideas in the Pipeline

• (More) improved Tcl performance
• Archive file support (.jar/.zip)
• Larger source / binary distributions
• Tcl Installer
• Stand-alone executable support in core (wrap)
• 64-bit overhaul

• Smaller, modular core
• Drag Drop
• Windows Tk Performance
• Printing support
• Tk abstraction layer (TkGS)
• Megawidgets (roll your own)
• New Widgets

33
Conclusion

• Tcl core is robust, feature-rich
• and still pushing the boundaries
• Future emphasis on packages and modularization
• Community is the key to an even more successful
  future