mlliarm

How to use RSS to get updates from Twitter hashtags

Websites

• https://feeder.co/knowledge-base/rss-feed-creation/twitter-rss-feeds/
• https://www.tecmint.com/best-rss-feed-readers-for-linux/

Tools

From the above websites I found after some testing that the most reliable and useful in the 'free' tier are:

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Pealog

What

Playing around with the Peano Axioms and Prolog.

I'd used one of the implementations of the multiplication and addition operations as defined in the Peano system, found in this StackOverflow question or this one. For some reason I haven't kept the source code, since it must have been like 4 LOC.

This gist is simply to store the results, but feel free to explore the solutions provided in the previous links to do your own experiments.

Why

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Gists

In reverse chronological order from gist creation:

• 2022-04-18: Multiple keyboard layouts on RaspberryOS 64 bit, Debian Bullseye.
• 2022-02-28: Youtube from the Linux CLI.
• 2022-02-26: How to use RSS to get updates from Twitter hashtags.
• 2022-02-25: Factoring 10...01.
• 2021-12-23: An oldtimer's APL Code (tradfn v., dfn v.).
• 2021-12-22: Testing SymPy.

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NB. This problem was read in  the blogpost (https://www.glc.us.es/~jalonso/exercitium/numeros-libres-de-cuadrados/) of @Jose_A_Alonso.
NB. Problem statement: given a positive integer N, it's called square-free if no square number (eg 2^2, 11^11) can be created from its prime divisors.
NB. Created using the J903 online playground (https://jsoftware.github.io/j-playground/bin/html2/). 

NB. Let's get the matrix of the prime divisors of an array of integers
q: @>  10 30 40 1000 11 121
NB.  2  5 0 0 0 0
NB.  2  3 5 0 0 0
NB.  2  2 2 5 0 0
NB.  2  2 2 5 5 5

mlliarm

Multiple keyboard layouts on RaspberryOS 64 bit, Debian Bullseye

Issue

The issue is that if one follows the usual steps, the keyboard layout handler doesn't change the layouts. It's a very well known issue.

Solution

From the above link, and most specifically this post, the solution is as follows:

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# Credit to `oskar31415` from the r/APLjk discord server for sharing the code and his friend for writing it.
 '''
 Original code:
 
 (lambda N,P:(lambda f,i:P.show(__import__('matplotlib.animation',fromlist=['FuncAnimation']).FuncAnimation(f,lambda i:[i.set_array((lambda g:(lambda n:N.logical_or(n==3,N.logical_and(g,n==2)))((N.sum([N.roll(N.roll(g,y,1),x,0)for x in(-1,0,1)for y in(-1,0,1)if x|y],0))))(i.get_array())),[i]][1],interval=0,blit=1)))(P.figure(),P.imshow(N.random.rand(200,400)<.2,)))(__import__("numpy"),__import__("matplotlib.pyplot")) 
 '''
 
 # Expanded by mlliarm@
 import pdb    
 try:

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Electron apps

• Marp: Markdown presentation ecosystem.

• muryoimpl/slippr: markdown presentation app by Electron

• joe-re/cafe-pitch Markdown-driven presentation tool built on Electron.

Slide deck frameworks supporting Markdown source

mlliarm

Nice email clients for GNU/Linux

Evolution

• Better than Thunderbird.
• https://wiki.gnome.org/Apps/Evolution

Mutt

• CLI based.

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Youtube from the Linux CLI

I really love listening to music when programming, on my old Linux laptop.

So, to save resources I looked for a CLI Youtube app. And there is an amazing one.

Enter yewtube

• Yewtube is a fork of mps-youtube. Find yewtube here. Follow the instructions in the README.md file to install it.
• Suggestion: install it within a virtual environment (virtualenv).

mlliarm

An oldtimer's APL code

What

Some pretty cool code from the 70s'-80s' that a Reddit user shared at this question.

Here's what u/snarkuzoid wrote:

5x5 Knight's Tour in APL

It puts an A in the middle, then randomly does a knight's tour,