Archives for Janis Lesinskis' Blog

Fri 21 April 2023: Bud light boycott
Tue 18 April 2023: Prime marks and typography
Tue 11 April 2023: Weighted average lease expiry
Wed 22 March 2023: Online chess hiatus
Wed 22 March 2023: Another reason to avoid dating apps
Mon 20 March 2023: Glycosphate and the breakdown of discourse
Mon 20 March 2023: Determinism in research code
Mon 20 March 2023: Exit liquidity shills
Sun 19 March 2023: Collateral crisis psychology
Sun 19 March 2023: Luna a modern case of hyperinflation
Sat 18 March 2023: Bags of rocks at the LME warehouses
Tue 14 March 2023: How cheaper computational power has changed banking
Sun 12 March 2023: 2023 Avalon Airshow
Sat 04 March 2023: The markets for metals
Fri 03 March 2023: A useful postgres explain tool
Fri 03 March 2023: What is a commodity
Sat 18 February 2023: EBDITA and accounting games
Sat 18 February 2023: Mindat.org is amazing!
Sat 18 February 2023: Central bank interventions and price discovery
Thu 16 February 2023: I'll be talking about failure demand tonight
Wed 15 February 2023: What makes metals valuable
Mon 13 February 2023: Foundational chemistry ideas needed to understand metals
Mon 13 February 2023: What is a metal
Sun 12 February 2023: Functools cached_property
Sun 12 February 2023: Metals series introduction
Mon 26 December 2022: Looking back at the RPA hype cycle
Sat 03 December 2022: FTX and madoff, simlarities and differences
Sat 03 December 2022: pdfsizeopt
Mon 28 November 2022: The QR code restaurant experience
Sun 13 November 2022: The fall of FTX
Wed 09 November 2022: Demand destruction anecdotes
Mon 07 November 2022: The 2006 debasement of NZ coinage
Mon 19 September 2022: I quit Twitter
Sat 10 September 2022: Expensive lettuce and cheap sushi
Sat 10 September 2022: Violence in 2022
Fri 09 September 2022: Some predictions for the upcoming era
Thu 08 September 2022: GameStop short squeeze part 3
Mon 08 August 2022: Setting the ssh key for a git clone
Wed 06 July 2022: The death of the six PM news
Tue 31 May 2022: Practical Pylint usage
Mon 30 May 2022: The myth of the unbalanced government budget
Sun 29 May 2022: Crypto crash update May 2022
Sat 21 May 2022: Crypto's Lehman moment
Wed 18 May 2022: Where is your line in the sand?
Mon 16 May 2022: Economic sanctions and vodka bans
Sun 15 May 2022: Why I stopped using Ebay to sell things
Sat 02 April 2022: Daylight savings ready to wreck my sleep again!
Wed 30 March 2022: Oscars and CMBS
Wed 02 March 2022: Russia-Ukraine conflict crypto grifting
Mon 28 February 2022: Bastiat on legal systems and morality
Mon 28 February 2022: End of another aviation era - the Antonov 225
Mon 21 February 2022: Debugging an issue with Pelican
Sun 20 February 2022: Hot takes for clearing the Ambassador bridge
Thu 17 February 2022: My bank workshop experience
Sat 12 February 2022: The limits "no code" solutions
Mon 24 January 2022: That annoying Matt Damon crypto advertisement
Thu 13 January 2022: Rapid antigen test profiteering
Tue 11 January 2022: Omicrons extreme transmissibility combined with far milder symptoms is forcing policy changes
Wed 05 January 2022: Transitory inflation means permanent purchasing power reduction
Sun 02 January 2022: Engineered timber
Sat 11 December 2021: Where is money created
Mon 29 November 2021: A change in the common knowledge in the markets - last weekend of November
Sat 27 November 2021: Learning from history
Thu 25 November 2021: Bank bail ins
Thu 25 November 2021: Problems with Celsius
Sat 06 November 2021: 2021 crypto ponzi schemes
Wed 03 November 2021: What a difference a few years makes in crypto
Sat 30 October 2021: Why is so much financial advice bullshit
Fri 29 October 2021: Why do stable coins matter
Thu 28 October 2021: Futures markets lower prices, both in good and bad ways
Fri 22 October 2021: Is this the end of Melbourne's COVID lockdowns?
Sun 03 October 2021: I don't like daylight savings
Fri 01 October 2021: Meanwhile over on the VIX...
Fri 01 October 2021: V shaped lies
Thu 30 September 2021: "Maximum" salaries
Wed 22 September 2021: 2021 September 22 Melbourne earthquake
Tue 21 September 2021: Fast things happen slowly then quickly
Sun 19 September 2021: Finally getting around to publishing some monetary policy articles
Wed 15 September 2021: 13 years since the failure of Lehman Brothers
Tue 14 September 2021: Getting CORS to work with Flask
Sun 05 September 2021: Another reason why piping the outputs of curl into bash is a security risk
Sun 05 September 2021: Why things have been quiet here lately
Tue 31 August 2021: Type annotations in Python 3.7
Wed 11 August 2021: Numpy and mypy type checking
Tue 10 August 2021: SQLAlchemy and mypy type checking
Sun 18 July 2021: Beware of Python assertions in production code
Fri 16 July 2021: Sentinel objects and mypy type checking
Mon 05 July 2021: Javascript support in this blog
Sun 04 July 2021: 2021 mid year update
Thu 10 June 2021: Australian open tennis 2021
Wed 09 June 2021: WordPress enumerations
Wed 02 June 2021: Hard rubbish day 2021
Tue 01 June 2021: Geoclue and other annoyances
Sun 16 May 2021: Politics of unproductive debt
Thu 13 May 2021: PFOF and Bernie Madoff
Thu 13 May 2021: The Eddie Murphy trading rule
Mon 29 March 2021: std::cout and uint8_t
Sun 28 March 2021: JIT logistics and tail risks
Fri 26 March 2021: The fmt library
Thu 25 March 2021: id est
Tue 23 March 2021: Backup of Quora content
Mon 22 March 2021: Deleting my Quora account
Sat 13 March 2021: Why isn't version control on the curriculum
Thu 11 March 2021: How wide are the underlying data types for Python integers
Wed 10 March 2021: The state of C++ education in 2021
Tue 09 March 2021: GameStop short squeeze part 2
Sat 06 March 2021: Vending machine controller test platform
Fri 26 February 2021: Legacy networking protocols
Wed 24 February 2021: What are the markets smoking?
Wed 24 February 2021: The calm before the commodities end of month rollover storm
Sun 31 January 2021: TIL a precise definition of eurodollars
Sun 31 January 2021: The pandemic of mindless contactless payments
Sat 30 January 2021: A quick introduction to the mechanism of stock short selling
Sun 10 January 2021: Knowing when to give up on legacy projects
Sat 09 January 2021: What are "no code" solutions?
Sun 03 January 2021: Dependency management in code files is not great
Fri 01 January 2021: 2020 is over!
Wed 30 December 2020: Financial spam emails ratio
Wed 16 December 2020: Who owns bank deposits?
Mon 14 December 2020: Nosocomial
Wed 09 December 2020: Australia desperately needs to start learning from others about covid
Tue 08 December 2020: 2020 collectables
Fri 04 December 2020: I've been asked to make a list of reading suggestions
Wed 02 December 2020: Why price impacts from Quantitative Easing can be delayed
Sat 21 November 2020: The Expensify election email
Thu 19 November 2020: Spotting financialization when looking for work
Tue 17 November 2020: The USA presidential election process
Sun 15 November 2020: This site now has a sitemap.xml file
Thu 12 November 2020: Solar panels and car sales, a financialization story
Sun 08 November 2020: Please stop making arbitrary password restrictions
Wed 04 November 2020: 2020 USA election
Mon 02 November 2020: Slack capacity and food supply chains
Thu 15 October 2020: Good developers care about their tools
Fri 09 October 2020: The story of Lasseters reef
Wed 07 October 2020: Making the post date more obvious
Thu 01 October 2020: Impacts of a dependence on backpackers and other foreigners on farm labour during a crisis
Wed 30 September 2020: WeGrow
Sun 27 September 2020: Is this blog now popular enough to be plagiarized from?
Sat 26 September 2020: Margin investing is psychologically corrosive
Fri 25 September 2020: Canned audience sounds during the pandemic
Wed 23 September 2020: Please don't exclusively use Twitter for communicating important announcements
Wed 16 September 2020: Why can't we house the homeless?
Fri 11 September 2020: The decline of the average level of experience in the software industry
Wed 09 September 2020: What negative prices look like
Tue 08 September 2020: Fake comment discussion scam
Fri 04 September 2020: Calling the top of the NASDAQ rally
Tue 18 August 2020: Default parameters and sentinel objects
Wed 12 August 2020: Could we see geographical divergence in Australian culture?
Thu 06 August 2020: Gold breaks 2000 USD/ounce
Sun 02 August 2020: A bitcoin long squeeze
Sun 02 August 2020: The stonks market
Sat 01 August 2020: End of another Australian airline era
Thu 30 July 2020: The Kodak stockmarket moment
Mon 27 July 2020: Today I learned the real reason why there's reeding on the sides of coins
Sun 26 July 2020: What is this thing called science
Thu 23 July 2020: The Chatham House Rule
Tue 21 July 2020: The future of automation products
Tue 21 July 2020: The great RPA rebranding
Mon 20 July 2020: Automation has a narrow window of recognition
Sun 19 July 2020: History of the automation industry
Tue 14 July 2020: Today I learned about poaceae
Sun 12 July 2020: Fixing the bug with the series sort order
Sun 12 July 2020: Natural sorting and pelican series
Sun 12 July 2020: I'm freezing new long form articles for a while
Sat 11 July 2020: Cache invalidation and UX
Sat 11 July 2020: A handy git command
Sat 11 July 2020: Python's data model and intuitive operators
Thu 09 July 2020: Today I learned a new word - disinflation
Thu 09 July 2020: Creating a topo map - day 10
Mon 06 July 2020: Creating a topo map - day 9
Sat 04 July 2020: Creating a topo map - day 8
Sat 04 July 2020: Trading card games and competitive play
Thu 02 July 2020: Creating a topo map - day 7
Wed 01 July 2020: Creating a topo map - day 6
Tue 30 June 2020: Creating a topo map - day 5
Thu 25 June 2020: Why I'm not a Dropbox customer anymore
Wed 24 June 2020: Creating a topo map - day 4
Sun 21 June 2020: Git preview for a single file?
Sat 20 June 2020: Initial bankruptcy offering
Sat 13 June 2020: Templated email... almost
Thu 11 June 2020: Creating a topo map - day 3
Wed 10 June 2020: Creating a topo map - day 2
Tue 09 June 2020: The new LinkedIn look and feel
Tue 09 June 2020: Creating a topo map - day 1
Tue 09 June 2020: Creating a topo map - intro
Mon 08 June 2020: PHP turns 25
Tue 02 June 2020: The MIT licence is community hostile
Tue 02 June 2020: Today I learned a new word - Gerontocracy
Mon 01 June 2020: Death during the COVID19 pandemic
Sat 23 May 2020: Personal impact of COVID19
Mon 18 May 2020: Common sense
Tue 12 May 2020: PyPi web API
Mon 11 May 2020: Updating your setup.py files to the newer format
Sun 10 May 2020: Stockfish vs AlphaZero
Tue 05 May 2020: Demand shocks and toilet paper
Sun 03 May 2020: Air quality
Sat 02 May 2020: End of an Australian airline era
Wed 29 April 2020: Number pyramid problem
Mon 27 April 2020: Maker vs manager schedules
Tue 21 April 2020: Creating your own user events in pygame
Mon 20 April 2020: Unicode whitespaces in Python
Thu 16 April 2020: The HTML abbreviation tag
Thu 16 April 2020: Finding out what a python script imports
Tue 14 April 2020: Pylint false positives with C extensions
Thu 09 April 2020: Have we reached peak Python?
Sun 05 April 2020: Software workloads in the COVID19 world
Sat 28 March 2020: Stringly typed functions
Thu 26 March 2020: Platinum status quarantine
Wed 25 March 2020: LaTeX support on this blog
Tue 24 March 2020: One percent a day
Mon 23 March 2020: Daily writing goal
Sun 22 March 2020: Preparing for a break from playing billiards
Sat 29 February 2020: Happy leap day!
Mon 17 February 2020: What causes Pylint no-member false positives and how to deal with this
Mon 27 January 2020: Sorting IP addresses in Python
Tue 07 January 2020: Myriad
Wed 25 December 2019: Page requests to the metal - Backend web framework
Mon 23 December 2019: Build system options in 2019
Thu 19 December 2019: RAM usage 50 years after Apollo
Tue 17 December 2019: Different techniques for debugging code
Thu 12 December 2019: Finding the versions of imported modules in Python code
Mon 25 November 2019: Page requests to the metal - Backend implementation
Mon 25 November 2019: Page requests to the metal - Backend - What happens on the server
Mon 25 November 2019: Page requests to the metal - frontend
Mon 25 November 2019: Page requests to the metal - hardware level
Mon 25 November 2019: Page requests to the metal - introduction
Mon 25 November 2019: Page requests to the metal - Network stack - From frontend to backend
Sat 23 November 2019: Debloating
Sun 03 November 2019: Running pip as a Python module
Sat 05 October 2019: Daylight savings transition tonight
Tue 01 October 2019: Falsehoods people believe about Australian time zones
Mon 30 September 2019: Why I now hesitate to use TeX
Sun 29 September 2019: How important are portfolios to developers
Sun 04 August 2019: Various ipsum text examples
Fri 02 August 2019: Using the Python markdown library
Wed 31 July 2019: Representing keyboard shortcuts
Sun 21 July 2019: Different ways to drop into an interactive python shell
Wed 17 July 2019: Modification date information matters
Wed 03 July 2019: Forwards compatibility with Python generators
Fri 28 June 2019: A day in the life of a package maintainer
Thu 27 June 2019: Deprecating module level variables
Tue 25 June 2019: MDB and vending machines
Tue 25 June 2019: Forcing connections to be HTTPS only
Mon 24 June 2019: Site redesign
Wed 19 June 2019: Backend update
Sun 05 May 2019: PyCon USA 2019 poster session poster
Wed 01 May 2019: PyCon USA 2019 coming up!
Thu 11 April 2019: Getting Altair to render inline in Jupyter
Fri 08 February 2019: Girls In Tech San Francisco workshop
Mon 12 November 2018: Pair programming with beginners
Sat 01 September 2018: PyCon Australia 2018
Fri 20 July 2018: A couple of questions about mypy
Sat 14 July 2018: Python's __hash__ function is not a cryptographic hash
Sat 23 June 2018: Limiting the runtime of Python unit tests
Sun 27 May 2018: Pytest fixtures with Flask
Thu 24 May 2018: Renaming Git branches
Fri 11 May 2018: Moving commits from one repository to another.
Mon 07 May 2018: Enforcing foreign key constraints with SQLite
Sun 22 April 2018: Python self references
Wed 14 February 2018: TIL: Install options for pip in requirements.txt
Fri 09 February 2018: TIL: Python import machinery details
Tue 06 February 2018: Logging uncaught exceptions in Python applications
Sun 24 December 2017: TIL: Python hashing implementation details
Sat 09 December 2017: 2017 tech thoughts
Fri 25 August 2017: Interfacing Python with C or C++
Tue 11 October 2016: Getting the MMAP array library on PyPi
Wed 05 October 2016: CompCon 2016
Sun 25 September 2016: Generating python bindings from C++11 with pybind11
Sun 25 September 2016: Deprecation warnings in python
Sat 24 September 2016: Which techniques help us be more productive?
Fri 23 September 2016: Testing for exceptions with Jasmine
Tue 16 August 2016: PyCon Australia 2016
Sun 06 December 2015: Using LaTeX for fast document generation
Mon 19 October 2015: Python's comprehensions syntax for java developers
Fri 12 June 2015: Virtualenv ubuntu
Sun 28 December 2014: Django inheritance
Sun 21 December 2014: Using Travis CI with Django
Sun 24 August 2014: Booleans in Django templates
Tue 05 August 2014: Using virtualenvwrapper with Fabric
Fri 18 July 2014: Code repair 2: Fibonacci and standard deviations homework (part 1)
Fri 18 July 2014: Code repair 2: Fibonacci and standard deviations homework (part 2)
Sun 06 July 2014: Lessons learned from my first attempt at making a footbag database website
Mon 16 June 2014: Useful linux environment setup info
Mon 26 May 2014: Pelican image format issues
Sun 25 May 2014: Code repair 1: the problem with rand()
Sun 25 May 2014: Code repair series introduction
Sat 24 May 2014: Setting up Pelican on PythonAnywhere
Mon 19 May 2014: What am I doing with my life?
Sat 17 May 2014: A c++ project organization trick
Wed 14 May 2014: Nearly disastrous mistake
Mon 12 May 2014: Aiming billiards shots
Fri 02 May 2014: Using git without an internet connection
Sun 27 April 2014: Creating an effective Python web development environment
Tue 22 April 2014: First post