How to get screen dimensions as pixels in Android

I created some custom elements, and I want to programmatically place them to the upper right corner (n pixels from the top edge and m pixels from the right edge). Therefore I need to get the...

Fastest way to list all primes below N

This is the best algorithm I could come up. def get_primes(n): numbers = set(range(n, 1, -1)) primes = [] while numbers: p = numbers.pop() primes.append(p) ...

Is there a bit-equivalent of sizeof() in C?

Sizeof() doesn't work when applied to bitfields: # cat p.c #include<stdio.h> int main( int argc, char **argv ) { struct { unsigned int bitfield : 3; } s; fprintf( stdout,...

Decrypt or decode Facebook access token from Facebook Graph iOS SDK

The Facebook iOS SDK is granting encrypted or encoded access tokens in this...

Get album art from MP3 PHP

I am using this code to get ID3 information of an MP3 File. <?php class CMP3File { var $title;var $artist;var $album;var $year;var $comment;var $genre; function getid3 ($file)...

Add line break to tooltip in Bootstrap 3

I am using Bootstrap 3 and added a tooltip to my div. I've tried using < br > \n and &#013; to create the new line. Would it be a problem with the Bootstrap stopping me? <div class="content...

PHP Contact Form w/ File Upload Attachment

I have a simple PHP contact form (Seen Here) that I want to add a file upload option to, so clients can attach an important document and mail it to me using PHP's mail function. The form works...

Convert multiline string to array

I have this script: nmapout=`sudo nmap -sP 10.0.0.0/24` names=`echo "$nmapout" | grep "MAC" | grep -o '(.\+)'` echo "$names" now the $names variable contains strings delimited with newlines: >_ ...

Specified argument was out of the range of valid values. Parameter name: index

I have to disable the hyperlink in the gridview depending on the result of the condition in my code behind, however i always get an error of Specified argument was out of the range of valid...

Finding Minimal lexicographical Array

I tried solving this interview question. My code runs for test cases but fails for all the real input test cases. I tried hard to find the mistake but unable to do so. Please find my code...

Codility PermCheck why my solution is not working

I'm trying to solve Codility lessons for coding practice and PermCheck is one of them. [Edit] Problem Description: A non-empty zero-indexed array A consisting of N integers is given. A permutation...

PCA biplot group individuals

I have many individuals in my data (n=600). I run a PCA and would like to create a Biplot of variables and individuals. I'd like the variables coloured by their contribution. These individuals...

Write your own implementation of math's floor function, C

I was thinking about the floor function available in math.h. It is very easy to use it: #include <stdio.h> #include <math.h> int main(void) { for (double a = 12.5; a < 13.4; a += 0.1) ...

Is complexity O(log(n)) equivalent to O(sqrt(n))?

My professor just taught us that any operation that halves the length of the input has an O(log(n)) complexity as a thumb rule. Why is it not O(sqrt(n)), aren't both of them equivalent?

How to fully dump / print variable to console in the Dart language?

Hey there I am searching for a function which is printing a dynamic variable as completely as possible to the console in Dart language. In PHP for instance I would use var_dump() in order to get...

Ansible Failed to set permissions on the temporary

I am using ansible to replace the ssh keys for a user on multiple RHEL6 & RHEL7 servers. The task I am running is: - name: private key copy: src: /Users/me/Documents/keys/id_rsa ...

OpenMP Parallel Computing Prime Numbers

The following is simple code for computing prime numbers: #define END 100000000 // Only pass odd values to this function int is_prime(uint32_t v) { uint32_t end = sqrt(v); for (uint32_t...

threading.Timer to kill long running task with basic cleanup control

I'd like to monitor a process and auto-kill it if it runs more than N seconds. I'm editing this question in response to the suggestion that it's a duplicate...

array vs std::initializer_list as function parameter

I can write a function which take a temporary array(such as {1, 2, 3}) as an argument in two ways: // using array template<typename T, int N> auto foo1(const T(&t)[N]) -> void; // using...

How to fix compilation errors in MSVC related to declaration of anonymous struct inside a 'for' loop?

We can declare anonymous struct inside for loop as below (g++): for(struct { bool OK = true; } s; s.OK; s.OK = false) std::cout << "Hello, world!\n"; But, this code results in compilation...

How to build a conda environment with pytorch=0.3.1, since I keep getting conflicts

I need to get an environment working with the following requirements, but it just won't do. I have tried many things and always end up with something like below. Does anyone know how I can get an...

Neo4j How to access node's properties in python

I'm able to make a query to a graph database like this from neo4j import GraphDatabase #establish connection graphdp = GraphDatabase.driver(uri="bolt://localhost:7687",...

Error: The non-abstract class 'InternalSelectableMathState'

I just updated flutter version from 2.5.3 to 2.8. I have the following error that i dont know how resolve it. There is no error on any plugin installed, It seems that the error comes from the...

create-react-app says "Create React App requires Node 14 or higher." Fixing node gives "npm does not support Node.js v10.19.0"

I was trying to create a react app, but got following $ npx create-react-app react-demo npx: installed 67 in 6.045s You are running Node 10.19.0. Create React App requires Node 14 or higher....

THREE.JS & Reality Capture - Rotation issue photogrammetry reference camera's in a 3D space

Thanks for taking the time to review my post. I hope that this post will not only yield results for myself but perhaps helps others too! Introduction Currently I am working on a project involving...

Linearize nested for loops

I'm working on some heavy algorithm, and now I'm trying to make it multithreaded. It has a loop with 2 nested loops: for (int i = 0; i < n; ++i) { for (int j = i + 1; j < n; ++j) { for...

(Python) tkinter figures (with colorbar) overlap when using slider

The following codes is to plot contours from five (slider: 0 ~ 4) .xlsx files on tkinter. Each file just contains numerical data in the matrix 12X6 such as from tkinter import * import...

How can I count sequences that meet these constraints?

I am trying to count permutations of a sequence of I and O symbols, representing e.g. people entering (I for "in") and leaving (O for "out") a room. For a given n many I symbols, there should be...

Why does the same code run at some engines and not in others?

I have a piece of code* that should run properly, but it seems that it only runs in: JSFiddle StackSnippet if you are using Edge It doesn't run in (only tested in my Win 11...

Why is this C++ code only marginally faster than Python?

I converted some python code into c++ hoping for some performance benefits but found that the c++ implementation was only marginally faster. The code I'm converting is an sos filter from the scipy...

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