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Program
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General information
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There will be a come-together on Friday evening for those arriving in Cologne the day before the meeting.
We will meet in the restaurant
Germania directly located at the river Rhine
for eating, drinking and talking.
It will start at 19:00 and you can join anytime depending on your arrival time.
Saturday evening the official social event will take place as a river cruise with buffet-style dinner.
Holger offers to show some of the highlights of Cologne during a walk on Sunday afternoon.
This map gives an overview of the different EuroTcl locations.
Note, that lunches on Saturday and Sunday as well as the social event are included in the registration fee.
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Photos
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Photos from EuroTcl 2015
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Program Schedule
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| Friday |
| 19:00 |
Come Together at the Germania Restaurant |
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Talks and Presentations
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Paul Obermeier
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CAWT Use Cases
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CAWT - COM Automation With Tcl -
was introduced at EuroTcl 2012 as a Work-In-Progress report.
Since then several releases have been realized adding new modules and enhanced functionality.
CAWT is a high-level Tcl interface for scripting Microsoft Windows® applications
having a COM interface. It uses Twapi for automation via the COM interface.
Currently packages for Microsoft Excel, Word, PowerPoint, Outlook and Internet Explorer,
MathWorks Matlab and Google Earth are available.
This talk will give an overview of the current status of CAWT and show example use cases of CAWT.
The use cases range from simple additions to my personal "Swiss Knife"
application toolset poApps
to a Tcl and Microsoft Office based requirement,
test and documentation framework used for an internal project at work.
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Jan Nijtmans
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Unicode 8 for Tcl
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Work is in progress to improve the Unicode support for Tcl.
Some Unicode-related improvements already saw the light in Tcl
8.6, but keeping trace with the upcoming Unicode 8.0 standard is an
ongoing challenge.
This talk will summarize which changes were done in Tcl 8.6, and
which changes can be expected in future Tcl versions.
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Ben Fuhrmannek
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QMON: Uncomplicated monitoring for small environments
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QMON is a simple open
source monitoring application suitable for a small number of hosts
and services. It aims to be a quick and secure alternative to nagios with focus on simplicity.
After a brief architectural overview the talk covers implementation details of CGI and CLI
frontends, database backend and the actual monitoring check execution.
Also, in order to provide a usable configuration interface, qmon introduces an
enhanced version of ini-style configuration featuring template substitution.
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Alexandru Dadalau
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Using dictionaries to store, manage and visualize 3D data
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Christian Werner
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AndroWish meets the ingeniously delightful Internet of Things
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With Android 4.3 and later the portable devices are able to talk Bluetooth 4.0
(aka Bluetooth Smart or Bluetooth Low Energy) which starts to gain some traction
in the Internet of Things.
The talk presents AndroWish's Tcl interface to this connectivity.
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Harald Oehlmann
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From Android Newbie to first Tcl apk
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A simple but often used TCL utility to verify a particular Bar Code
structure should be ported to Android.
The aim was acheved from nearly no Android knowledge to the apk file in two weeks.
New Android extensions were font size control via gesture and Icons
resizing with the font size.
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Csaba Nemethi
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How to Make Optimal Use of Drag & Drop with Tablelist
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This is a short tutorial presenting the drag & drop support in the Tablelist package.
The relevant tablelist subcommands and default bindings are explained with the aid of two demo scripts
showing how Tablelist, combined with the TkDND extension or BWidget's drag & drop framework,
can make Tcl applications much more user-friendly.
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Christian Gollwitzer
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Speeding up VecTcl - experiments with compilation to machine code
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VecTcl is an extension for numerical analysis, which focuses on a seamless
integration with the Tcl language[1].
VecTcl expressions are compiled into Tcl procs, which evaluate vector expressions
using a backend written in C. While this approach provides satisfying execution
speed for large vectors[2], VecTcl programs can still not match the execution speed
of an equivalent program in C.
This is especially true for scalar expression, where even plain
Tcl is faster due to bytecode compilation.
These limitations can be overcome by
JIT compilation. The jit branch of VecTcl[3] demonstrates the feasibility of
compilation to native code for a limited subset of VecTcl.
The experimental compiler uses tcc4tcl to compile the VecTcl program via C to machine code.
Several other ways have been investigated, including the use of an external
compiler (gcc) and JIT libraries such as sljit. A speed-up of 10x over Tcl for
scalar math (100x over scalar VecTcl) was observed using VecTcl/tcc.
For a similar improvement of vectorized code, stronger JIT backends than tcc are needed,
which is evident by a comparison to an offline C compiler as the backend.
[1] VecTcl http://auriocus.github.io/VecTcl/
[2] Benchmarks http://auriocus.github.io/VecTcl/benchmarks/linreg.html
[3] VecTcl JIT https://github.com/auriocus/VecTcl/tree/jit
[4] sljit http://sljit.sourceforge.net/pcre.html
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Arjen Markus
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My experiences with Tcl
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I would like to present my experiences with Tcl over the last four years.
While nothing spectacular in the sense of new programming techniques, I have been using Tcl
extensively to support my research:
data analysis, data presentation, drawings in articles, software for a course and numerical simulations.
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Holger Jakobs
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Short talk: A ISO8601 compliant calendar widget
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The available calendar widgets are all made with canvas and cannot be navigated by keyboard.
Plus, most of are not ISO8601 compliant.
Therefore, I wrote my own calendar widget in pure Tcl/Tk as a Tcl module without canvas
and ISO8601 compliance. Since ISO8601 is a worldwide standard, there is absolutely no way
of using old-fashioned, deprecated national ways of writing a date.
But the texts used for month names and (abbreviated) weekday names can be localised using standard msgcat.
The widget uses the namespace calendarWidget, but not (yet) TclOO.
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