arc | Arc is an operating system for DAOs | Blockchain library

In tkinter I have made a notepad and also added a scrollbar to this notepad. The problem is when I click on the scrollbar (not using any arrow keys nor mouse scroll wheel)

I have tried google but I'm not the best at finding the right websites.

Heres the code to the notepad

I am modeling a Time-constrained CVRP. The problem is to minimize the total travel time (not including the package dropping time) subject to vehicle (delivery) capacity and total time spent (per vehicle) constraints. The package dropping time refers to an additional time to be spent at each node, and the total time spent equals to the travel time plus this additional time. I have the below model that works for a single vehicle-type case. I would like to introduce two-vehicle type concept in there, meaning that I have a set of V1 type vehicles and another set of V2 type vehicles. The only difference of the vehicle-types is the per time cost of travel. Let x denote the per time unit cost of travel by V1, and y denote the per time unit travel cost of V2. How can I design the model so that it incorporates this additional aspect?

I know this is a Rust newbie problem, but I actually can't wrap my head around it. I need to pass around a PhysicalDevice from the Vulkano library. The problem is, PhysicalDevice holds a reference:

I know this question has been asked many times, but I still can't figure out what to do (more below).

I'm trying to spawn a new thread using std::thread::spawn and then run an async loop inside of it.

The async function I want to run:

I know there are a few answer for this, but it seems this one is a bit different. I need to change doughnut chart, rounded the first one and the last but one too. So in my example the black (first dataset) only would be rounded on the beginning (one side) and the gray (last but one) would be rounded at the end, like on the picture.

Of course, this is the latest version (v3) of Chart.js.

I used some code from here: Chart.js Doughnut with rounded edges and text centered

Maybe it's better with a custom chart, but I couldn't even get this far with that.

This is my code so far. Only makes rounded the first dataset and unfortunately both sided of it.

I have a couple of arcs dataframes with a very similar structure to these:

I need to find a way to create a new dataframe that merges both, following this structure:

or this structure:

Currently I have a piece of code that can do something similar to that but instead of a pandas dataframe (which is what I want to use) I'm using dictionaries (the reason behind that is that each "route" has different caracteristics that makes them unique from each other so a dictionary is useful and at the time I was just learning Python) but the issue is that it takes too much time and uses a lot of memory so I'm trying to find a way to make it a little bit quicker, avoiding 'for' loops and trying to apply Pandas to create the merged dataframe.

This is an extract of the structure of my current piece of code, for this example, consider the 'A' dataframe as the one that holds every combination possible of arcs so the 'if' condition makes sure that a connection exists before creating the route.

I'm struggling with the following issue. I visualized a big social network and would like to customize the color palette of the edges captured in geom_segmentfor better visibility. For instance, I want to replace my blue scale by a red scale. How can I achieve that in the easiest way possible?

I have the following code which is working fine:

I am new to zimpl and I am currently trying to modell the GTSP. The setting is that we have nodes which are grouped into clusters. My problem is i dont know how to implement in zimpl which node belongs to which cluster.

What I did so far:

set V:= {1..6}; set A:= { in V*V with i < j};
set C:= {1,2,3};
set W:= { in C*C with p < q};
set P[]:= powerset(C); set K:= indexset(P);

I am guessing something is missing because i want to group node 1,2 in cluster 1, 3,4 in cluster 2 and 5,6 in cluster 3.

Some background Information:

Let G = (V, A) be a graph where V=1,2,...,n is the set of nodes and A = {(i, j): i, j ∈ V, i ≠ j} is the set of directed arcs (or edges), and let c_ij be the travel distance (or cost or time) from node i to node j. Let V1, V2, ... , Vk be disjoint subsets of V such that union of these subsets equals to V. These subsets are called clusters. The GTSP is to find the tour that (i) starts from a node and visits exactly one node from each cluster and turns back to the starting node (ii) never visit a node more than once and (iii) has the minimum total tour length. Associated with each arc, let x_ij be a binary variable equal to “1” if the traveler goes from node i to node j, and “0” otherwise.

Thats the mathematicl model I want to model: min∑i∈V ∑j∈V\{i} cijxij subject to: ∑i∈Vp ∑j∈V\Vp xij = 1 (p= 1, ..., k) ∑i∈V\Vp ∑j∈Vp xij = 1 (p= 1, ..., k) ∑j∈V\{i} xji − ∑j∈V\{i} xij = 0 (∀i∈V) xij∈{0,1} ∀(i, j)A up−uq+k ∑i∈Vp ∑j∈Vq xij+(k−2)∑i∈Vq ∑j∈Vp xij ≤ k−1 (p≠q;p,q=2,...,k) up≥0 (p=2, ..., k) (Thats the link for the paper: http://www.wseas.us/e-library/conferences/2012/Vouliagmeni/MMAS/MMAS-09.pdf)

Maybe someone can help! thanks

I'm trying to get clokwerk to schedule an asynchronous function to run every X seconds.

The docs show this example: