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Mastering Development

Perfect information game – action function

i can’t uderstand the activation function in the perfect-information game definition given by the book i’m studying on. ================================================================================================ A (finite) perfect-information game (in extensive form) is a tuple G=(N, A, H, Z, χ, ρ, σ, u) where: N is a set of n players A is a (single) set of actions Z is a […]

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Mastering Development

apply a function to factors of each column for all columns of a data frame

I have a data frame with 6 columns. The 4 first columns contain 2 factors each. I would like to write a function (or a for loop) to perform a test (e.g wilcox.test) between the factors of each column for values of pc1 and pc2 columns. If i was to do it manually : wilcox.test(df[df$g1=="bm",5],df[df$g1!="bm",5]) […]

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User Help

Is this a suspicious Apparmor usr.lib.snapd.snap-confine.real, script? If so, what does it do? How do I remove or replace it with the intended script?

The entire script is too long to post but this installs to /etc/apparmor.d/usr.lib.snapd.snap-confine.real without installing apparmor-profiles even after I purge apparmor. Im running Ubuntu 20.04 LTS on the ZFS filesystem. usr.lib.snapd.snap-confine.real: Author: Jamie Strandboge jamie@canonical.com #include <tunables/global> /usr/lib/snapd/snap-confine (attach_disconnected) { # Include any additional files that snapd chose to generate. # – for $HOME on […]

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Mastering Development

check the text to change the background color

I’m looking for a way to check if the user is putting the words in the correct order to change the background color. So here is my code that was made with a friend of mine: It’s first creating a phrase that is "I am not." that you can change by clicking on it. You […]

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Mastering Development

How to overlay a netcdf4 raster image on world map?

I am attempting to plot a world map of aerosol height data pulled from the Sentinel 5 Precursor/TROPOMI level 2 data from the data hub available here on dropbox. I am specifically looking at Hawaii (5-30 degree N, 130-180 degree W) and am attempting to plot the aerosol height which is in netcdf4 (.nc) format. […]

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Mastering Development

Coupling pdes across various domains using fipy

I am completely new to fipy. I am trying to solve the following set of pdes across two different domains using fipy. The variables are p,n and ψ and q,Dn,Dp,un,up,e and N are all constants. N and e change values from domain 1 to domain 2. Domain 2 is a rectangular domain stacked above a […]

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Mastering Development System & Network

PHP/MySQL: Getting multiple inserts on one event

I m using PHP to track email opens and update it in mysql database. But whenever a open event happens i m getting multiple inserts from the same user like this userid response_time db20eea614 2020-05-07 19:13:27 db20eea614 2020-05-07 19:13:27 db20eea614 2020-05-07 19:13:27 db20eea614 2020-05-07 19:13:26 db20eea614 2020-05-07 19:13:26 db20eea614 2020-05-07 19:09:46 db20eea614 2020-05-07 19:04:26 c8decdc52c […]

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Mastering Development System & Network

PHP/MySQL: Getting multiple inserts on one event

I m using PHP to track email opens and update it in mysql database. But whenever a open event happens i m getting multiple inserts from the same user like this userid response_time db20eea614 2020-05-07 19:13:27 db20eea614 2020-05-07 19:13:27 db20eea614 2020-05-07 19:13:27 db20eea614 2020-05-07 19:13:26 db20eea614 2020-05-07 19:13:26 db20eea614 2020-05-07 19:09:46 db20eea614 2020-05-07 19:04:26 c8decdc52c […]

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Mastering Development

how to reverse the Bit operation in C

I have the following C program which will get the MSB, 2nd MSB, 3rd MSB and LSB for value now 1588800373). How do I reverse it? That is, If the program has time_0 = 94, time_1 = 179, time_2 = 43, time_3 = 117, how do I construct it back to now = 1588800373; #include […]

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Mastering Development

Why am I getting a segment fault for my for one of my loops in this code? And where is it?

This program is supposed to change the most commonly occurring one letter word in a text with the most commonly occurring one letter word in the English Language. The rest of the items aren’t that important for the purposes of this question. The most recently changes for loops are the one just mentioned and one […]