Fastest sort of fixed length 6 int array

Answering to another Stack Overflow question (this one) I stumbled upon an interesting sub-problem. What is the fastest way to sort an array of 6 integers? As the question is very low level: we...

How to print to stderr in Python?

There are several ways to write to stderr: # Note: this first one does not work in Python 3 print >> sys.stderr, "spam" sys.stderr.write("spam\n") os.write(2, b"spam\n") from __future__ import...

Phpstorm zen coding: insert <?php ?> tag

Is there a built-in zen coding shortcut in PhpStorm to insert a <?php ?> tag? If not, how would I go about setting one?

Python - 'import' or pass modules as parameters?

I was wondering if passing module objects to a class or object which requires it rather than using import might not be a bad idea, as it avoids hard dependencies on those modules. I was wondering...

How to have invisible git meta commits?

Short version: Is there a way to check-in a change to a git repository but "hide" the changeset metadata from general consumption (preserves the prior changeset in the blame, etc.)? Long...

the Role of "/etc" in Zen of Unix / GNU Linux

I have a question on Zen of Unix / GNU Linux, which looks like an aha-moment for me... Apparently ANY standard Unix/Linux program has a config file, which the most are located at /etc...

How would you define a pool of goroutines to be executed at once?

TL;DR: Please just go to the last part and tell me how you would solve this problem. I've begun using Go this morning coming from Python. I want to call a closed-source executable from Go several...

Where is "The Zen of Python" located in the CPython source code?

You of course know what happens when you import this, but where is the Zen located in the interpreter source code? I'd searched the string "Readability counts" with both ag and grep -r in a local...

How to use "lorem" inside paragraph tag

I am just learning zen-coding and am trying to do this: Entering 'lorem' and hitting tab will produce 50 word lorem text. However, if I start with <p></p> and then type lorem + tab inside the tag,...

How can I return python's "import this" as a string?

Typing import this will return the Zen of Python, but nowhere do I seem to be able find a solution about how to set it equal to a string variable which I can use further on in my code...

Disable button on form submission but post button value

I want to prevent multiple form submissions, but I need to have the value of the submit element posted back to the server (so that I know which button the user clicked on). Most of the Internet...

Sonar installed & started but not accessible

Summary: Installed standalone sonar Started through /etc/init.d/sonar start sonar.log doesn't show any error unable to open http://mymachine.ipaddress:9000/sonar GET...

Zenity as a datetime picker

I see that zenity can pick calendar dates with the --calendar option. Is there a way to get it to prompt for a time too? I've looked through the manual and it seems like it doesn't. And if that's...

After sonarqube upgrade 5.2 -> 5.6, WebServer is not operational any more

I'm using WindowsServer2008 and MySql 5.6.31. I wanted to upgrade SonarQube from version 5.2 to 5.6. After starting SonarQube the log-file shows the below lines. Everything should be finde,...

Django app defaults?

I'm looking for a way to have application defaults and settings that are easy to use, difficult to get wrong, and have little overhead.. Currently I have it organized as...

Printing a right-aligned "#" staircase

I am doing the following question in Hackerrank: https://www.hackerrank.com/challenges/staircase?h_r=next-challenge&h_v=zen Basically, the code has to print out a right-aligned "staircase" made of...

Hide top bar in visual studio code (zen mode)

I have hidden tabs already and disabled some things like line numbers etc. How to get rid of top bar which contains file name ProfilePrivate.tsx?

Cannot find type definition file for ‘zen-observable'

I'm working with Ionic 3, I just choose aws default template and I get an error: > ionic start app0 aws // aws is a default starting app in Ionic3 > cd app0 > ionic serve When I serve...

SQL Notes: Hackerrank The Report Query how to save the subquery variable

Problem:(Link [https://www.hackerrank.com/challenges/the-report/problem?h_r=next-challenge&h_v=zen][1]) You are given two tables: Students and Grades. Students contains three columns ID, Name and...

Are load ops deallocated from the RS when they dispatch, complete or some other time?

On modern Intel1 x86, are load uops freed from the RS (Reservation Station) at the point they dispatch2, or when they complete3, or somewhere in-between4? 1 I am also interested in AMD Zen and...

Zenity: HOW TO create a user and change its password?

I'm new to zenity and would like to create a GUI for creating a new user and password. My code goes like this: #!/bin/bash zenity --info --text='Welcome to Account Creation Wizard' zenity --entry...

HackerRank:- Day 4: Class vs. Instance, some weird error for some reason

Getting error for this test :- https://www.hackerrank.com/challenges/30-class-vs-instance/problem?h_r=next-challenge&h_v=zen One test case is failing for some reason, when I ran it in my IDE, it...

Flat is better than nested: how to deal with deeply nested dictionaries?

In my work as an engineer (not software) sometimes I have to program in Python. Following the tutorials, I learned about dictionaries and how they are used to store data, they are fast etc. I have...

GCC-Go - Optimize builds for specific architecture

How does one uses environment variables to optimize a go binary? For instance, with C and GCC, you would set CFLAGS="-O2 -march=znver1 to build with tier 2 optimizations, with specific...

How to put a health bar over the sprite in pygame

By the title, I'm hoping that my the player would have a health bar attached to their head. If they move, the health bar also moves. Say sprite is my player. Hey sprite! He has a health bar on top...

Nautilus script not showing up in right click menu when nothing is selected

I have the following script to add an action to my right click menu in Nautilus (using Ubuntu 20.04): ~/.local/share/nautilus/scripts/Open with Disk Usage Analyzer: #!/usr/bin/env bash if [ -n...

What's the best practice of typing hint after python 3.9?

After python3.9, there are at least three ways to use typing hint. Take the build-in collection set for instance: # way 1 def f(s: set[str]) -> str: pass # way 2 def f(s: typing.Set[str]) ->...

how to access RAPL via perf with Rocket Lake?

I have a Rocket Lake CPU(11900K), but perf does not support access power events with it yet, how can I do it? The perf events list: pastebin.com + tcsSdxUx My OS: Ubuntu 20.10 Kernel 5.12-RC6 perf...

how to fill the hollow lines opencv

I have an image like this: after I applied some processings e.g. cv2.Canny(), it looks like this now: As you can see that the black lines become hollow. I have tried erosion and dilation, but...

Why does my Intel Skylake / Kaby Lake CPU incur a mysterious factor 3 slowdown in a simple hash table implementation?

In short: I have implemented a simple (multi-key) hash table with buckets (containing several elements) that exactly fit a cacheline. Inserting into a cacheline bucket is very simple, and the...