Skip to content

Martin Thoma A blog about Code, Politics, and my life

Home Tags Archives Support me

All categories

Code285

2024Designing Event-Driven Systems in Local Python Applications
2023Let your computer speak to you
20219 Clean Code Patterns I wish I knew earlier
Python 3.10 is Released
Library vs Service: 7 Arguments to consider Learn what the difference is and when to use which
8 Techniques To Speed up Your Database “If everything seems under control, you’re not going fast enough”
Scaling Vertically vs Scaling Horizontally Be smart or throw money at the problem
Programming Interviews: Fizz Buzz An all-time programming classic for interviews
Encryption vs Encoding vs Hashing They might appear in the same context, but they are vastly different
Merkle Trees The concept and applications - plain and simple!
HTTPS vs SSL vs TLS What they are and what the differences are
6 YAML Features most programmers don’t know Level up your YAML knowledge to write cleaner YAML files
2020Python's Scoping Rules The extraordinarily short guide to Python's crazy scoping rules
How to get an amazing Terminal In Windows and Linux; including prompts, fonts, and colors
pydantic The library you must know if you juggle data around
Visual Studio Code — Python Editors in Review I think I fell in love 😍
PyCharm Professional — Python Editors in Review See what money can give you 🤑
A Beginner’s Guide to Python Development on Windows 10
JSON encoding/decoding with Python
How to write Flake8 plugins 😍
Logging Basics in Python
Pre-commit hooks
Pytest Plugins to Love ❤️
How I moved a library from Python 2 to 3
Static Code Analysis for Python
Mutation Testing
Property-based Testing
CI Pipelines
Structuring Unit Tests
Unit Testing in Python — tox and nox
How to Test Flask Applications
Unit Testing in Python — Patching, Mocks and Dependency Injection
Unit Testing in Python — The Basics
Type Annotations in Python 3.8
Python's super() Function
Sorting Big Data
Python EEL
Python is interpreted
Raw SQL vs Query Builder vs ORM
Python Requirements
Naming Styles
XOR
MongoDB
File Encryption
asyncio
Maximum Contiguous Subarray Sum
How to build reliable Software
Solving Equations
Dynamic Programming
Backtracking
Code Golf: Brackets Check
Software Architecture
Maximum Fixed-Length Contiguous Subarray
Matrix Multiplication: 2020 Update
Current Python Versions
Python Packaging Course
Virtual Environments
PyPI Analysis 2020
2019Coding Fonts
How to Speed up Docker
Flask Plugins
Git Contribution Statistics
Lynis
Face Recognition
Software Stacks
Flask Chat - Part I
Python Itertools
Bucketing in A/B-Testing
Simulated Annealing
jq
Ansible
Key-Value Stores
pyproject.toml
How to analyze Set Data
TLS and Nginx
Celery
SQL Connection Strings
Gunicorn
Simple Operations and Basic Numbers
Python Puzzle 4
Code Optimization
2018Code Quality
Ways to store Data
Type Systems
Python Package Versions
Python's str vs repr
Closures
Python property
Command Line
How old am I?
Bugs
Flask and Gunicorn
Git - Version Control Done Right
Testing in Python
Python Style Guide
Make Python Objects JSON serializable
Stages of Software Development
Pandas: Merge, join, concatenate
Datetime
Python Projects
2017Git Repository Managers
Scrum
Python Scheduling
The JavaScript World
Data Serialization
Strings
Docker
Defaults of Configuration Files
Git Bundle
How to use GLPK
Matplotlib Markers
How to use arXiv data
2016Word Vectors
URL RegEx
Python's map, reduce and filter as list comprehensions
Kalman Filter
Talking with Daemons
2015Analyzing PyPI Data - 2
Languages for Back Ends
Python Markov Chain Packages
Python Code Documentation
Python ctypes
The Rust Programming Language
HTTPie
Python and Encodings
Reading and Writing Files with Python
Python and CSV
Python Shell autocomplete
Execute Python on Apache2
GUI programming with Python
Regular Expressions with Python
Analyzing PyPI Metadata
2014Packaging with Python
Cronjobs
Subversion
Java Exceptions
Critique of Python 3
Nyquist–Shannon sampling theorem
On-line Handwriting Recognition of Mathematical Symbols
Start long-running processes via SSH
Logging in Python
Configuration files in Python
Append Python PATH
Introduction to Octave
Fix zypper readline error
Linux Commands for Working from Home
What are pfiles?
Classify MNIST with PyBrain
HTML5 Template
Prolog
TCL
How to use Sublime Text via SSH
Interpreters and Shells
Sublime Text
Ruby
Sum of cubed digits riddle
2013How to check if a point is inside of a polygon?
Formatting Strings in Python
Fibonacci, recursion and decorators
Working with Terminal
Part III: Matrix multiplication on multiple cores in Python, Java and C++
Sweep-Line algorithm for intersections
Part IV: How to multiply matrix with its transpose in Python and C++
SQL Injections
Graphic filters
three.js is AWESOME!
Spline interpolation
Zero Mean Normalized Cross-Correlation
JavaScript: WTF?!?
Polynomial interpolation
Structs in C++
Inverting matrices
Fractions in C++
Solving linear equations with Gaussian elimination
Solving equations of upper triangular matrices
Solving equations of lower unitriangular matrices
k-nearest-neighbor classification and k-means - an interactive example
The Collatz sequence
Maps in C++
Google Code Jam – Round 1C 2013
How do hash functions work?
Google Code Jam – Round 1B 2013
Google Code Jam – Round 1A 2013
Google Code Jam Templates
What does #!/usr/bin/env python mean?
Colors in Vim
What does volatile mean?
C Puzzle #3
Check File Systems maximum path depth
How to check if two line segments intersect
What can ArrayList / LinkedList do what List can't?
Basic Multithreading in Java
Software Licenses
Part II: The Strassen algorithm in Python, Java and C++
Check x-in-a-row for board games
Cyclic references kill Nautilus
How to sort with Java
2012C++ Preprocessor Snippets
Why are Microsoft products so User unfriendly?
How can I sketch an application?
Profiling C programs
Debugging a C program
Make your Bash more useful
Project Euler: Problem 35
Project Euler: Problem 33
Project Euler: Problem 32
What is the best programming language?
A practical approach to floats
Java Puzzle #14: Integers
C Puzzle #2
Java Puzzle #13: Absolute Value Weirdness
Java Puzzle #12: Control-flow
Learning Java
Java Puzzle #11: Change argument of foreach
Java Generics
Python Puzzle #3: Associativity
Sizes in LaTeX
Code golf
How to check if a point is inside a rectangle
Java Puzzle #10: Multiple Interfaces
Project Euler: Problem 26
Java Puzzle #9: Template method pattern
Java Puzzle #8: Interfaces and Visibility
Java Puzzle #7: Inheritance and Visibility
Java Puzzle #6: Double Arithmetic
Java Puzzle #5: Parallel Programming, Part 2
Java Puzzle #4: Parallel Programming
Python Puzzle #2: None and False
Plotting graphs with PGFplots (LaTeX and Tikz)
Swing II: How to arrange Objects
Swing I: How to use Swing
How to parse command line arguments in Java
How to parse command line arguments in Python
Java Puzzle #3: Rounding
Java Puzzle #2: Integers and Floats
GOTO in Python, Java and C++
Java Puzzle #1: Pre- and Postincrement
My LaTeX Tikz Template
C++ Operator Overloading
How to create your own Python module
Complex LaTeX visualizations (Tikz)
Perfect number check and ROT-13 encryption in MIPS-assembly code
Part I: Performance of Matrix multiplication in Python, Java and C++
Python Puzzle #1: List multiplication
How to print MIPS assembly code in LaTeX
Add MIPS syntax highlighting to gEdit
Functional Programming in Python
Cool Features of Python
Vectors in C++
Sets in C++
Stacks in C++
C Puzzle #1
How do Bitmasks work?
How to visualize Graph algorithms with LaTeX
Google Code Jam 2012 – Round 1C 2012
Google Code Jam 2012 – Round 1B 2012
How to Print Source Code with LaTeX
Google Code Jam 2012 – Round 1A 2012
Software Versioning Cheat Sheet
Google Code Jam 2012 - Qualification Round
PHP: A strange language
Project Euler: Problem 142
Get your programs assembly code and more information
Linux Memory Consumption
2011Wandering through the depths of find
Surprising C errors
vrms - virtual Richard M. Stallman
How to use magic rescue
Comparing programming languages
For Loops in Different Programming Languages
Checkstyle
Python Generators
Understanding Python Lists
Search Engine Autodiscovery
Create LaTeX timetable
Comparing Dates in PHP and MySQL
Colorize Your Script Output
Joke: Electrical Engineering vs. Computer Science
Python: Check Wiki-references for citation template
PHP: PEAR MDB2
Getting Hardware Information in Ubuntu
Benchmarking PHP
Converting Files with Linux
Tricks with .htaccess
Polyglots - Crazy Programming Stuff

Cyberculture126

2021Is it worth changing the Lightbulb? Switching for a more efficient lightbulb for economic reasons
Hooks vs Callbacks vs Webhooks How do I use them and where is the difference?
Synchronous vs Asynchronous vs Concurrent vs Parallel What is the difference and why does it matter?
10 Robustness and Resiliency Design Patterns to Learn Today
How to use GPG Send and receive encrypted messages
The 7 Types of Cryptocurrencies You Must Know Coins, Utility and Security tokens, Stablecoins and NFTs: Bringing order to an ecosystem
5 Applications of Digital Signatures Learn what they are and how they are used
6 Alternatives to Classes in Python Speed of development, execution time, (de)serialization, and maintainability all play a role in making your code shine
Shift Left: 7 Stages to Speed up Application Development while Improving Quality Let’s do it in an agile way
The 3 Applications of Hash Functions What they are, what the options are, and why they matter
2020Analyzing what I spend money on in 2020 A data scientist's yearly review
2019Digital Process Automation
Monitors
2018Academic Writing
Domain Registration
File Sizes
Video Display Interfaces
Why do we use references?
WhatsApp Data
2017Online Tools
Scraping with Selenium
Amazon's Power
Working at FZI
curl vs wget
Lidl Connect
Autofill Phishing
R - A language
How to typeset chess games with LaTeX
This Blog - Technical Stuff
Learning Machine Learning
MP3 Player
2016Fake News: It's a symptom, not the problem
Colors in LaTeX
Why Trump might be Good
Lectures on YouTube
Constants as Music
Internet Traffic
Thoughts about Language
Microsoft Vision API
Support Me
Paid Reviews
The cost of fighting Terrorism with Bombs, Surveillance and Fear
Disable Caps Lock
Get PDF pages
Explaining Away
How to clear a USB stick
2015OpenBCI
Rename Script
Increase the maximum file upload size in PHP
Getting a Feeling for Energy
Dreamspark SDM Odyssey
Bug Reporting - A User's Perspective
2014Don't lose your stuff
Chatbots
Famous Software Bugs
Replicators
How to draw speech bubbles
Logo Design Tournament
How mathematics could change our future
Play Audio
The Impact of Strong AIs
Universal Rating System
3D Printing
Hyperlapse
Mouse clicking games
Citizen Science Projects
MediaViewer and Superprotect
Awesome Robots
Panasonic Lumix DMC-TZ41
Project Gooseberry
Internet at KIT
High-End Notebooks
Install and configure computer
SLURM
2013Word Error Rate Calculation
How to install Arch Linux 2013.10.01
Projects I never realized
Bitcoin
How to analyze Mailman archives
Data Backup Strategies
Improve German Public Transportation
Music videos
Calculate square roots
Generating many prime numbers
Nexus 4
Add a new font to ImageMagick
LaTeX Beamer
Linux access rights and attributes
How Chrome could be improved - 2nd Post
How to create a digital signature
CMOS circuits
2012PDF-Printing on Windows 7
Unreal Tournament 2004
How fast are electrons moving?
Blender Open Movies
Microsoft product flavor hell
Manipulating PDF files
Balanzan Theme
Neil deGrasse Tyson
How to reverse engineer a function
Short Educational Clips
Flags of the Earth
Globetrotter
Nature by Numbers
Why to study math?
What is a fractal?
LaTeX + Versioning = A great Experience
Python one-liners for Project Euler
The Best Advertising Campaigns
Typography: Word as Image
Computer Science Jokes
Portal - Still Alive typography clip
Check Computer / Hardware for Linux-compatibility
2011Adding a ppa in Ubuntu
Configurig gEdit for developers
Challenge Websites
Facepalm
If Computer Problems Were Real
Lolcats: Hermes' Favorite Activity
Cleverbot vs. Wolfram|Alpha
Ingenious Autocomplete
Epic Translation Fails
8 Animal Memes in Cyberculture
Animator vs. Animation
5 Online Comic Websites
Freaky Wikipedia Articles

German posts198

2026Die Energiewende
Kameralistik: Der Gemeindehaushalt einfach erklärt
Prognosen zur Landtagswahl in Sachsen-Anhalt 2026
Deutschland in der Welt
2025Protokoll Verkehrsausschuss Plattling, November 2025
Bildungspolitik: Ein Grund für teure Wärmepumpen
Decke abhängen - eine Anleitung
Perfect Design: Frischhaltedosen
PV-Angebotsvergleich
Hilfreiche Bürokratie
Wirtschaftlichkeitsberechnung einer Photovoltaikanlage
Einbau-Spots
Perfect Design: Akku-Staubsauger
Rezept: Rohkostsalat
Rezept: Schoko-Power-Müsli mit Banane
Günstiger Bauen
Steckersolar-Batterien 2025
Bundestagswahl 2025
Ausländer in Deutschland
Wirtschaft und Staatsfinanzen in Deutschland
Kosten der Krankenversorgung in Deutschland
Strom in Deutschland: Auf dem richtigen Weg in eine nachhaltige Zukunft
2024Stromzähler
Steckersolargeräte (Balkonkraftwerke)
365 Hauptgerichte
Was mir Hoffnung macht
Was mir Sorgen macht
Zeitdilatation
Die Mathematik hinter dem Wohnungsmangel
Textilien
Hauswert bestimmen
E-Autos
Politik gegen Wohnungsmangel
Stein
Food Processors
Pfannen
Rente
Rasenmäher
Reichtum in Deutschland
Wärmepumpen: Klimaanlagen-Modelle
Heizungsvergleich
Der perfekte Neubau
2023Beton
Brauchwasser-Wärmepumpe
Haus-Projekte
Alternativen für die alte Ölheizung
Dämmstoffe
Innenputz
Rasenmähroboter
Betriebskosten einer Holz-Heizung
Betriebskosten: Wärmepumpe vs Ölheizung
Heizlastberechnung
Kühlmittel
Innenwände streichen
E-Fuels - zu teuer für PKW
Stromtarife
Wirtschaftlichkeit von effizienten Haushaltsgeräten
Wärmepumpen
Weißbrot
Eisspeicher
Der Weg zum Eigenheim
2021Bundestagswahl 2021
2020Online-Schule
2019Homöopathie
Schlagsahne vs Saure Sahne
2017Ideen zur Verbesserung des KIT
Mindelheimer Klettersteig
Rental Scam
Abschlussbericht der Studienstiftung
Umzug
Statistik - Klausur
Korsika GR 20
2016Computer Vision for Human-Computer Interaction
Sommerakademie Greifswald
Informationsfusion
Lokalisierung Mobiler Agenten
Probabilistische Planung
Analysetechniken für große Datenbestände
Nukleare Endlagerung
Wasserrohrbruch in Karlsruhe
2015Machine Learning 1
Wo ist Hörsaal 9 am KIT?
Computergrafik - Klausur
Machine Learning 2
Mustererkennung - Klausur
Neuronale Netze - Klausur
Echtzeitsysteme - Klausur
Markovsche Ketten - Klausur
2014Hörspiele
Trickreiche Matheaufgaben
Warum ist Q abzählbar?
SVN am KIT
Scherzfragen
Formale Systeme Klausur
Prüfungsverwaltung am KIT
GeoTopo Klausur
2013Programmierparadigmen Klausur
Informatik am KIT
Bundestagswahl 2013
Gauß'sche Zahlen und verwandte Ringe
Kollisionsresistente Hashfunktionen und Einwegfunktionen
Simquadrat
Medion Life MD 83962 E69229
Mathematische Strukturen
Sicherheit-Klausur
Semantische Sicherheit
Rechnernetze-Klausur
E.i.d. Algebra und Zahlentheorie-Klausur
Datenbanksysteme-Klausur
KogSys-Klausur
Numerik-Klausur
KV-Diagramme
Betriebssysteme Klausur
Algorithmen II - Klausur
Flipflops und Latches
Das Consensus-Verfahren
Das Quine-McCluskey-Verfahren
TI-Klausur (DT & RO)
Wie wende ich die Shannon-Zerlegung an?
Adressierung
Web Engineering
2012Wie wendet man den Transformationssatz an?
31. BwInf - Runde 1, Aufgabe 2
Wie zeige ich Differenzierbarkeit?
Karlsruhe: Oberbürgermeisterwahl 2012
Linux Scheduler
Tribonacci-Folge
Beweise aus der booleschen Algebra
Definitionen aus Digitaltechnik
Programmieren Tutorium
Review des Acer Travelmate 5744Z
Bürokratie am KIT
PSE am KIT
Aufgaben zur Integralrechnung
Integration durch Substitution
Partielle Integration
Konvergenz von Reihen
Jordansche Normalform: 4x4 Matrizen
Berechnung der euklidischen Normalform
Bundeswettbewerb Informatik
Konvergenz von Folgen
Peg Solitaire
Jordansche Normalform: 2x2 Matrizen
Wie berechnet man die Jordan'sche Normalform?
Wie bestimme ich den Kern einer linearen Abbildung?
Der Kaiser von China und der Reis
Klausur Analysis I und II
Mathe-Aufgabe: Blutspende
Ist die Funktion / Relation wohldefiniert?
Sichtweite des Burdsch Chalifa
Entwurfsmuster-Beispiele
Endliche Gruppen
Permutationen und Transpositionen
Klausur Lineare Algebra I + II
Übersicht der Pfeile in UML
SWT I Klausur
Die Länder der Erde
B-Bäume
Die Landau-Symbole
Übersicht über Datenstrukturen
Algorithmen-Klausur
Übersicht über Sortieralgorithmen
Mathe Puzzle #1: Verschleierung
Wie berechnet man die Cholesky-Zerlegung?
Warum kann der Mond keine Atmosphäre haben?
LaTeX-Vorlage für den Semesterbericht der Studienstiftung
LaTeX-Vorlage für ein Lastenheft
Eclipse für SWT I einrichten
Wie berechnet man das charakteristische Polynom?
Eigenwerte, Eigenvektoren und Eigenräume
Lernkontrolle: Lineare Algebra I
Wie berechne ich das multiplikativ Inverse einer komplexen Zahl?
Eigenschaften von Abbildungsmatrizen
Wie bestimme ich das Inverse einer Matrix?
Wie bestimme ich die Basiswechselmatrix?
Abschlussaufgaben Programmieren
Briefe mit LaTeX schreiben
Definitionen aus GBI
GBI-Klausur
TGI-Klausur
Kellerautomat
Komplexitätsklassen in der Informatik: Ein Überblick
Konstruktion der Chomsky-Normalform
Minimierung eines Automaten mittels Äquivalenzklassenkonstruktion
Wahrscheinlichkeitstheorie - Klausur (Info)
Sprachen, Automaten und Grammatiken: Ein Überblick
Bachelor Informatik, 1. Semester: Was bisher geschah
Wie bildet man den Schnitt zweier Vektorräume?
Frauenquote am KIT
2011Eine Sprache ist nicht regulär - Beweis mit dem Pumping-Lemma
Wie führe ich einen Induktionsbeweis?
Prädikatenlogik: Aussagen formalisieren
Konstruktion eines deterministischen endlichen Automaten aus einem nicht-deterministischem
Einführung in die abzählende Kombinatorik
Wie führe ich einen sauberen Beweis?
Analysis I - Teil 1
Einführung in die Stochastik
Imprint

Machine Learning70

Mathematics12

2017The p value
The Absolute Value Function
2016Estimating Demand
2015Distribution of Random Variables when max gets applied
2013Calculations with quaternions
How to solve linear congruence equations
How to calculate the Legendre symbol
How many Homomorphisms exist between Z/nZ and Z/mZ?
Why is the stabilizer subgroup a subgroup?
Why is the intersection of two normal subgroups a normal subgroup?
Why everybody should know about conditional probability
2012When Is Matrix Multiplication Commutative?

My bits and bytes135

Review8

2014Logitech z120 Lautsprecher
Arena Villa am Wasserpark
Bolt (DVD)
Chinesischer Garten
Dialogmuseum
Die Kuh die Lacht
MeinFernbus
MortPlayer Audio Books

Security18

2022ReDoS — Denial of Service by RegEx 😈
2021Multi-Factor Authentication 😇
Credential Stuffing 😈🐝
Docker Security 😇 A hands-on guide to security for Docker
Insecure Deserialization 😈🐝
2020Full Disk Encryption 😇 Keep your data private, even if you lose your device
DoS via a billion laughs 😈 Consume arbitrarily much RAM by repeated referencing
Effective Access Control 😇
The Cyber Security Triad It’s the CIA 🕵 — but maybe not what you think
Software Composition Analysis (SCA)
Email Spoofing 😈 Learn what it is, how it works, and how to defend against it with SPF, DKIM, DMARC
ZIP Bombs 💣😈 Make your storage explode 💥
Password Hashing 😇
Cross-site Scripting (XSS) 😈
Leaking Secrets 😇
SQL Injections 😈
XXE attacks 😈 PDF, Excel, SVG, ebooks — all use XML. They can be vulnerable.
2011CAPTCHA

Sell2

2012Acer Travelmate 5744Z
Externe Festplatte

The Web60

Martin Thoma – A blog about Code, Politics, and my life
E-mail subscription
RSS feed
Privacy / Datenschutzerklärung
Impressum
Powered by Pelican