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User Help

Setting up SAMBA shares on a Linux system with SELinux enabled

I have for several years administered a server that hosts several shares over SAMBA. Every time there is a new share or maintenance to be done, there never seems to be a comprehensive list of things to get right for the shares to work correctly and have the correct permissions for the user. As I […]

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Mastering Development

Increment string from given array of letters or exclude specific letters from incremental with PHP

I have a list of allowed letters $allowedLetters = array(‘B’,’C’,’D’,’F’,’G’,’H’,’J’,’K’,’L’,’M’,’N’,’P’,’R’,’S’,’T’,’V’,’W’,’X’,’Y’,’Z’); And from that array I would like to do string increment to get the following pattern: BBB, BBC, BBD … until ZZZ I know that I can do string increment as simple as this: $letters = array(); $letter = ‘BBB’; while ($letter !== ‘ZZZ’) { […]

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Ask Chemistry

Moles and Ideal Gas Law

I was given this problem: A mixture contains 8.00 g each of $\ce{O2, CO2}$, and $\ce{SO2}$ at STP. Calculate the volume of this mixture. Which of the gases would exert the greatest pressure and why? Here is my work: $\ce{O2}: \pu{8.00 g} \times \frac{\pu{1 mol}}{\pu{32.00g}} = \pu{0.250 mol}$ $\ce{CO2}: 8.00\, \pu{g} \times \frac{1 \text{mol}}{44.01 \, […]

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User Help Web Pro

Url rewriting is not working in filezilla

My url rewriting is not working in filezilla,but it is working in localhost RewriteEngine On # Turn on the rewriting engine RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^blog/([A-Za-z0-9-]+)/?$ blog.php?title=$1 [NC,L] RewriteRule ^news/([A-Za-z0-9-]+)/?$ news.php?title=$1 [NC,L] RewriteRule ^success/([A-Za-z0-9-]+)/?$ success-stories/healthcare.php?title=$1 [NC,L] RewriteRule ^success-stories/([A-Za-z0-9-]+)/?$ success-stories/download-form.php?id=$1 [NC,L] RewriteRule ^download-pdf/([A-Za-z0-9-]+)/?$ success-stories/Download-pdf.php?id=$1 [NC,L]

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Mastering Development System & Network

Apache and Virtual host returning NOT FOUND

In apache httpd.conf I changed #Include conf/extra/httpd-vhosts.conf to Include conf/extra/httpd-vhosts.conf. Then, in httpd-vhosts.conf I add this <VirtualHost *:80> DocumentRoot “c:/Apache24/htdocs/drw-framework-master/public” ServerAdmin webmaster@localhost ServerName www.drw.localhost ServerAlias drw.localhost ErrorLog c:/Apache24/htdocs/logs/error.log Loglevel warn CustomLog c:/Apache24/htdocs/logs/access.log combined SetEnv APPLICATION_ENV “development” <Directory C:/Apache24/htdocs/drw-framework-master/public> DirectoryIndex index.php AllowOverride All #Require all granted Order allow,deny Allow from all Options+Indexes </Directory> </VirtualHost> And finally, […]

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Mastering Development

Segmentation fault when using large number of input data in C++

I would like to know the reason behind my code not working in case of large no. of input. Actual this is a problem from codingame.com The problem The code is working on previous test cases. But not on the last test case, where the input is large. I would like to complete the problem […]

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Linux Mastering Development

Could someone help me resolve my issue reading inputs between files?

There are four files I am using here for this task: an input file, the file whose values I want to change, and two shell scripts. The first file, models_linearanalysis_Cep.dat is an input file that is organized as so: 1 0.020 0.700 5.4 1500 4000 2 0.020 0.700 5.4 1500 4050 3 0.020 0.700 5.4 […]

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Linux Mastering Development Ubuntu

Japanese keyboard layout symbol file broken since 18.04 to 20.04 upgrade

I recently installed a Japanese layout keyboard on a Lenovo X220 laptop. Using the terminal, and xmonad as a window manager, I first did: $ sudo dpkg-reconfigure keyboard-configuration Where I selected the Sun 7 Japanese 106 key keyboard, using the Japanese OADG-109A layout, as it matches the layout of the keys on the board I […]

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Mastering Development

How do I curve text in a polar plot?

Hello Matplotlib Experts, How do I curve text in a matplotlib polar plot? In my attempt below, my code rotates each char individually, but doing so would remove the natural spacing of each font. Can somebody describe a solution for passing ax.text in matplotlib? import numpy as np import matplotlib as mpl import matplotlib.pylab as […]

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Mastering Development

How could I give in Kruskal’s algorithm the name of the locations (vertex) in the form of strings, more precisely city names?

I wrote the following code with Kruskal’s algorithm and I don’t know how to modify it so that the locations are city names. public class Vertex { public char value; private char[] alphabet = {‘A’,’B’,’C’,’D’,’E’,’F’,’G’,’H’,’I’,’J’,’K’,’L’,’M’,’N’,’O’,’P’,’Q’,’R’,’S’,’T’,’U’,’V’,’W’,’X’,’Y’,’Z’}; public Vertex(char val) { this.value = val; } public int getIndex() { int idx = new String(alphabet).indexOf(this.value); return idx; } […]