left-right | A lock-free , read-optimized , concurrency primitive

https://www.geeksforgeeks.org/splay-tree-set-1-insert/

When I was learning about splay trees, I referred to this article and had a little doubt about the code in it.

this is splay function in this article

I have this block of python code to plot a city-scale satellite map.

I have this snippet from part of a code I'm working on with pyqtgraph ROI. I have also set boundaries in which the ROI cannot cross on all sides. When I move either of the vertical scale handles, it gives the ROI an opportunity to move left-right if click inside of it. Is there a way to prevent this from happening? I only want it to move up-down. This is kind of like setting another bound within the original bound to the ROI depending on the current X start position and X stop position.

I tried modifying the self.maxBound variable in the ROI class using signals but it became messy, and the ROI kept ignoring the right bound.

Any help will be greatly appriciated

I am building a puzzle app in Flutter and I am using the Dismissible inside a GridView to detect swipes on the tiles of the puzzles.

The problem is, I can dismiss a widget either in left-right or up-down direction at a time.

Is there a way to to enable all the four directions?

This is the function that returns the Dismissible:

I am working on a HackerRank problem and I don't understand some of the logic:

Consider this example, adapted from Correct, "full length" left-right arrows in Matplotlib?:

Using graphviz I want to generate the following graph (manually written in tikz for now):

I currently succeeded in writing a dot file giving me the following result (there is a single node using html for the Pile table on the top, and one node also using html for every grey box):

But unfortunately I was not able to keep the layout of grey boxes that I like AND to have the grey boxes on the right of the Pile table. I read carefully this related question and tried things with rank, subgraphs and rankdir without success.

Is there any hope to reach my goal with dot ?

EDIT: here is the complete dot file I have currently

So I'm a fractal enthusiast and decided to build a 2D/3D fractal generator in WebGL using raymarching, with Typescript as scripting language. I've been a C#/Typescript dev for several years but having zero experience with 3d programming, I used Michael Walczyk's blog as a starting point. Some of my code I use here is derived from his tutorial.

I added the functionality that you can move through the object using WASDQEZC keys. WS = strafe forward-back, AD = strafe left-right, QE = strafe up-down, ZC = roll left-right. I combine this with a mouse look function which moves in the direction the mouse pointer is located on the rendering canvas. So what I want is total freedom of movement like in a spacesim. For this I am using a separate camera rotation matrix together with translation values and send them to the shader like this:

I have a Parent View and Rendered the Partial View in it. And I have Added the Form tag in the partial View. It goes to the controller and return the data but the Partial View Content does not gets updated.