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Tcl 8.4 Overview

Tcl 8.4 Overview. Tcl 8.4 Overview. Jeff Hobbs ActiveState Corporation. Agenda. Introduction Development timeline New features Steps to 8.4.0. About ActiveState. ActiveState provides multi-language, cross-platform software & services Tcl, Perl, PHP, Python, XSLT

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Tcl 8.4 Overview

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  1. Tcl 8.4 Overview July 2002

  2. Tcl 8.4 Overview Jeff Hobbs ActiveState Corporation July 2002

  3. Agenda • Introduction • Development timeline • New features • Steps to 8.4.0 July 2002

  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 July 2002

  5. You are here 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 6.0 Sept 7.0 Sept 7.4 July 7.6 Oct 8.0 Aug 8.1 Apr 8.3 Feb … 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 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 July 2002

  6. R.I.P You are here Recent History of Tcl 6. ActiveState introduces Tcl support and services (Feb) 1. Tcl’2K 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. Tcl’Europe 2001 (June) 3. Tcl’Europe 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) July 2002

  7. Tcl 8.4 Development: TIPs • First time the TIP process has defined a Tcl releasehttp://www.tcl.tk/cgi-bin/tct/tip/ • TIPs are intended to guide and document development on the core • Initially rough, but process has improved • Of the 100+ TIPs, most targeted 8.4 • Many thanks to the maintainers and contributors July 2002

  8. Tcl Changes • 20+% improved performance over 8.3 • Completely new Virtual File System (VFS) • Improvements to numerous commands • 64-bit integer and file system support July 2002

  9. Minor command enhancements • array statistics • array names arrayName ?mode? ?pattern? • interp recursionlimit • regsub ?switches? exp string subSpec ?varName? • unset ?-nocomplain? ?..? ?name ...? • expr ‘eq’ and ‘ne’ for true string comparisons • glob -tails pattern ... • namespace exists • info script ?filename? July 2002

  10. Updated list commands • New lset command • Efficient way to replace elements • lindex list ?index ...? • Index into nested lists easily • lsearch -all -ascii -decreasing -dictionary -increasing -inline -integer -not -real -sorted -start July 2002

  11. ‘file’ enhancements • Virtual File Sytem • Allows hooks into all FS functionality • Full support for 64-bit file systems • file normalize • file separator • file system • file link July 2002

  12. Tcltest 2.0 • Greatly enhanced ‘test’ command • Supports multiple error match types • Runs multi-process for robustness • 100% backwards compatible with v1.0 July 2002

  13. Serial Port Control • fconfigure serial-mode baud,parity,data,stop -handshake type-queue -timeout msec-ttycontrol signalMap-ttystatus -xchar charPair-pollinterval msec-sysbuffer sizeList • fconfigure -lasterror July 2002

  14. 64-bit “wide” integers • Uses int64 or long long • Not completely transparent 32/64-bit barrier • expr wide(…) • ::tcl_platform(wordSize) • binary command support • binary format wW ... • binary scan string wW ... July 2002

  15. Changed behavior • fcopy now respects encodings of its channels • format %ld and likewise treat argument as wide integer • scan %ld and likewise no longer ignore the field width specifier • source treats the byte 0x1a (^Z) as an EOF char on all platforms • subst treats break and continue during command substitution differently • tcl_traceExec and tcl_traceCompile only available with TCL_COMPILE_DEBUG build. July 2002

  16. Updated ‘trace’ command • trace add • trace remove • trace info • Command tracing now possible July 2002

  17. Formalized ‘memory’ command • Useful for debugging memory problems • Requires compilation with TCL_MEM_DEBUG • memory active • memory init • memory onexit • memory tag • Removed memory display July 2002

  18. Tk Changes • Widget styling support (TIP #48) • New widgets • Significant widget enhancements • Improved I18N and L10N • Improved XIM and IME support • bell ?-nice? • First new feature of 8.4 July 2002

  19. New Widgets • spinbox • Builds on the entry widget • Fast, feature rich and efficient • panedwindow • Part widget, part geometry manager • labelframe • Separate from frame to not bloat it July 2002

  20. New Tk subcommands • clipboard get • image inuse • photo transparency • Now we can properly animate GIFs • tk caret window ?-x x? ?-y y? ?-height h? • For controlling global caret • Also directs placement of IME/XIM window July 2002

  21. ‘text’ Changes • New undo/redo support with ‘edit’ • -undo, -autoseparators and -maxundo option • ‘get’ takes multiple range pairs • ‘delete’ takes multiple range pairs • Atomic deletes • New virtual events • <<Selection>> • <<Modified>> July 2002

  22. ‘wm’ Changes • wm stackorder • View/Control the stacking order of toplevels • wm attributes • For controlling the platform specific aspects of toplevels • Implementations for Mac and Windows • May get Unix features in the future • Finally: topmost functionality on Windows July 2002

  23. Compound widgets • Allow both image and text to be displayed simultaneously • Orientation can be controlled with -compound option • Support for all button types and label widget, as well as in menus July 2002

  24. Updated widgets • button -disabledbackground –disabledforeground -compound • entry -state readonly -readonlybackground • checkbutton -compound -overrelief • listbox -disabledforeground -state -activestyle • menu add -compound • menubutton -compound • radiobutton -overrelief July 2002

  25. Asynchronous padding • Allows left/right or top/bottom asymmetry in padding (-padx -pady) • Applies to widgets … • frame • toplevel • labelframe • And geometry managers … • pack • grid • grid columnconfigure master index -uniform • grid rowconfigure master index -uniform July 2002

  26. Tk dialog changes • tk_getOpenFile -multiple -message • tk_getSaveFile -message • tk_getOpenFile and tk_getSaveFile are different in whether the returned file name includes the extension. July 2002

  27. Removed Tk Privates • tkPriv • tk[A-Z]* • Replace with ::tk::Priv and tk::… • Support for ‘exporting’ the private commands • … but don’t use them anyways July 2002

  28. Steps to 8.4.0 • Testing, testing, testing … • Testing, testing, testing … July 2002

  29. Where to get it • Tcl Developer Xchange • Points to everything • http://www.tcl.tk/ • ActiveState ActiveTcl • Binary distributions with extensions • http://www.activestate.com/Products/ActiveTcl/ • SourceForge • Core source distributions • http://tcl.sourceforge.net/ July 2002

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