tcl | Tensor Contraction C++ Library | Performance Testing library

I want to calculate the average for this column with tcl please help me

I am unable to match regex with a pin name having patterns with / and []. How to match string with this expression in tcl regexp?

I have a multiple lines in a variable in the below format.

I'm trying to help the owner of tkdnd generate a wheel and distribute it to Pypi so users could simply install the tkdnd extension with a simple pip install TkinterDnD2.

I'm after this 'challange' for the last two days but could not solve it by myself so far, but I'm sure someone with a deep understanding python packaging and installing process could help as solve it in short time.

currently in order to get this extension work you need to do the following steps(as mentioned here):

1. download the compiled tkdnd files for your os. now go to your base interpreter directory/tcl and copy this folder under. for example:

I have sales data for TV category for 24 months with columns like

Json Looks like :

Using Perl v5.28, Tkx.pm v1.10 with ActiveState Tcl/TTk v8.6.9 ('aqua' style), on macOS v10.13.6. The demo below works as desired, enabling the calling of a given subroutine using either a GUI button push using the mouse, or using keyboard input with a 'normal' text character.

The one additional feature I would like to have is the visual feedback of the graphical button being pressed (flashing) when the keyboard alternative activation is used. I found what looks like a Tcl solution using the event generate command, and a reference on using the Perl Tkx::event_generate() virtual event method call. I even found the equivalent Perl Tkx::after(100) function call to create the suggested delay. But I can't wrap my head around how to put this all together to achieve the desired effect. Any help would be appreciated, with the understanding that, like some other TTk features, this might not work on the Mac.

CODE

Am I missing something ? I thought I've done something like the example below. But neither I found a script of mine that act like I hoped, nor I have found something online. Basically I want to bind the Configure event to an item. Isnt it possible like the error suggest?

Resources : Canvas and tag_bind

If one is attempting to build a desktop program with a semi-complex GUI, especially one in which users can open multiple instances of identical GUI components such as having a "project" GUI and permitting users to open multiple projects concurrently within the main window, is it good practice to push the event listeners further up the widget hierarchy and use the event detail to determine upon which widget the event took place, as opposed to placing event listeners on each individual widget?

For example, in doing something similar in a web browser, there were no event listeners on any individual project GUI elements. The listeners were on the parent container that held the multiple instances of each project GUI. A project had multiple tabs within its GUI, but only one tab was visible within a project at a time and only one project was visible at any one time; so, it was fairly easy to use classes on the HTML elements and then the e.matches() method on the event.target to act upon the currently visible tab within the currently visible project in a manner that was independent of which project it was that was visible. Without any real performance testing, it was my unqualified impression as an amateur that having as few event listeners as possible was more efficient and I got most of that by reading information that wasn't very exact.

I read recently in John Ousterhout's book that Tk applications can have hundreds of event handlers and wondered whether or not attempting to limit the number of them as described above really makes any difference in Tcl/Tk.

My purpose in asking this question is solely to understand events better in order to start off the coding of my Tcl/Tk program correctly and not have to re-code a bunch of poorly structured event listeners. I'm not attempting to dispute anything written in the mentioned book and don't know enough to do so if I wanted to.

Thank you for any guidance you may be able to provide.