arbre | An Object Oriented DOM Tree in Ruby | Application Framework library

Sorry if this is a stupid question, but I would like to know how one can go about defining a class in an Arbre block. I tried to simply put the comma after the block, but Ruby accuses it of an error (specifically: "unexpected token tCOMMA (Using Ruby 2.3 parser; configure using TargetRubyVersion parameter, under AllCops) (error:Lint/Syntax)").

This is how I tried to do it:

My Wordpress has been hacked and cleaned, but now tens of thousands pages return 404 http code from Googlebot and other search engine witch saturate my hosting and SEO is a disaster.

My web site have only ten pages and i would like send an 410 http code for every urls exept my ten pages (and other stuff like images)

Here where I am

This is part of an exercise, in which I am creating a small network packet analyzer "as Wireshark".

I'm trying to store the Data of packets in a gtk_tree_store which can be revealed:

structures used:

packet's data is stored in a trame.

I am new to xslt and i've been struggling to find a solution to this, I need to create a table where my xml document sorted by the attribute "level" (niveau here) and then in alphabetical order

here is the xml document (it's in french in case you're wondering)

i have this little code to close a popin :

There are a lot of similar questions but I didn't find a solution in them so here is my problem :

In my JPanel I have a visual proof which I update to develop my proof, everything is good here. But I have a button which allows me to restart my proof. Instead of having my JPanel with the first line of my proof I have effectively my first line but I also see my old proof alternately (it's blinking). I dont't understand why.

My JPanel contains several components, not only my JPanel so I don't think that use removeAll() is a good idea. As you will see, I tried revalidate() and repaint() method but it doesn't work.

I would like to pass from to but actually I see both. Why ?

Here is some extracts of my code :

Here is the action when I push the button "debut". Only the end is useful for you, I use revalidate and repaint methods but nothing works. Pann is my class which extends JPanel.

I'm trying to run bundle install on my rails 6 app, but I can't successfully compile ffi:

For practicing reasons, I am working on Advent of Code 2015, and I am stuck at day 9. The goal is to find the shortest distance, while visiting every location within the graph exactly once. Every point is directly connected to each other and the end point must be different from the starting point. I have formulated a solution, but the final value is not correct, and I am not seeing the underlying problem.

First, I create a graph object with the locations and the distances. Then I collect every permutation of the locations into a list, and then I find and summarize the distances for each permutation. Finally, I print out the minimum distance value, which is the solution to the exercise.

The code:

I'm trying to send email with PHPMailer. Everythings work except UTF-8 encoding in Subject. I still get html code (commancé and has to be "commancé") in my mail client.