10.17.2 Greatest hits from previous weeks

10.17.2.1 What does "Tag Integer is Protected" message mean?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=6738

(Newbie question) 
 
For every function I define I get this message: 
When I close and reopen Mathematica, and re-enter the function definition, I don't get the message anymore. What does it mean? 
[warning-messages]
 

asked by stevenvh https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1450 Score of 15

answered by J. M.'s missing motivation https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=50 Score of 16

10.17.2.2 How to create animated snowfall?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=16881

Well, the title is self-explanatory. What sorts of snowfall can we generate using Mathematica? There are two options I suggest to consider: 
 
1) Continuous GIF animations with smallest possible number ... 
[dynamic] [random] [animation] [generative-art]
 

asked by faleichik https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=219 Score of 42

10.17.2.3 Figuring when the minute and hour hand coincide on a clock

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=573

I would like to list all possible times in a 12-hour period, where the hour hand overlaps the minute hand completely.  This is really a question about three distinct things - to be done in Mathematica ... 
[equation-solving]
 

asked by Steve D https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=191 Score of 16

answered by Verbeia https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=8 Score of 22

10.17.2.4 How to calculate contour integrals with Mathematica?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=34073

How to calculate the integral of $\frac{1}{\sqrt{4 z^2 + 4 z + 3}}$ over the unit circle counterclockwise for each branch of the integrand? 
[calculus-and-analysis] [complex]
 

asked by user64494 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=7152 Score of 45

answered by Artes https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=184 Score of 69

10.17.2.5 Mathematica Minecraft

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=19669

Some time ago I asked myself: with all these great graphics and interactive capabilities of Mathematica, what kinds of 3D games can be implemented in it?  And the answer which came to mind is ... 
[programming] [dynamic] [graphics3d] [eventhandler] [development]
 

asked by faleichik https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=219 Score of 173

answered by faleichik https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=219 Score of 254

10.17.2.6 Early computer art - reproducing Georg Nees "Schotter" and "K27"

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=298265

Georg Nees (1926 - 2016) was a pioneer of computer art. He studied mathematics, physics and philosophy in Erlangen and Stuttgart. In 1977, he was appointed Professor of Applied computer science at the ... 
[plotting] [graphics] [generative-art]
 

asked by eldo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=14254 Score of 23

answered by Daniel Huber https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46318 Score of 16

10.17.2.7 Parallel and perpendicular symbol from Mathematica to $\LaTeX$

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=46538

I want to get the following expression from Mathematica to $\LaTeX$: 
 
\begin{bmatrix} 
E_{\parallel} \\ E_{\perp} 
\end{bmatrix} 
 
I have tried to use inbuilt 'symbol' character from the special ... 
[latex]
 

asked by Steve Hatcher https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=13314 Score of 21

answered by Sjoerd C. de Vries https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=57 Score of 29