Charlie Harvey

Geekery

110 Geekery articles in total, showing 1 to 10

  • Solving binary puzzles with Haskell

    Solving binary puzzles with Haskell cover image

    I first came across binary puzzles in early 2013 after finding a book of them in a Belgian supermarket. And I believe that I've now published the first solver for binary puzzles written in Haskell. The puzzles are a little like sudoku. You get a grid which contains a number of ones and zeros and y

  • Au revoir Twitterfeed. Bonjour RSSTwit.

    Au revoir Twitterfeed. Bonjour RSSTwit. cover image

    A few weeks ago, I received an email from Twitterfeed’s founder, a chap called Mario. In unnecessarily jolly prose, it announced the demise of the service which turned RSS feeds into Tweets and recommended moving to dlvr.it or Buffer. We’re writing to let you know that Twitterfeed wi

  • Using Tor for apt package management on Debian

    Using Tor for apt package management on Debian cover image

    Recently, the Debian project announced that they intend to make more of their services available as Tor hidden services. They have added a new package to the repositories making it easy to use Tor hidden services when using apt to upgrade packages.Tor is software that allows better anonymity when

  • Servant: REST APIs as types

    Servant: REST APIs as types cover image

    In recent months, have been slowly working my way through Brian P. Hogan’s 57 Exercises for Programmers in Haskell in my lunch breaks and on bus journeys. You can see the github repo if you’re interested.As I work my way through the exercises, I have been trying to use idiomatic Hask


  • The pipeline operator

    The pipeline operator cover image

    One of the cool things about the Elixir language is that you can string functions together from left to right using the so-called pipeline operator |>. I was thinking about it this morning after reading this comment from taylorfausak on reddit. Why flip everything around like that? Write expr

  • Micropuzzles and generating Pythagorean triples

    Micropuzzles and generating Pythagorean triples cover image

    Micropuzzles is a charming book from the early 1980s by a chap called J.J. Clessa. It is a sort of forerunner of Project Euler, containing little puzzles aimed at computer hobbyists who have acquired those newfangled micros and are looking for something challenging to do with their machines.The

  • Setting up unattended upgrades on debian

    Setting up unattended upgrades on debian cover image

    There is fuller documentation of how to set up unattended upgrades on the debian wiki, but it is sometimes nice to have a super-compact cheatsheet for ones own reference. Others may have a use for it too.First thing to do is to install the necessary unattended-upgrades and apt-listchanges packag

  • Disable irritating Windows 10 update notices

    Disable irritating Windows 10 update notices cover image

    Windows 10 is horrible. Its a bug-ridden privacy invasion fest of the highest order. I realize that many working people are stuck within an abusive realtionship with Redmond and will be forced eventually to upgrade because they need Office 20XX.There is no need to be nagged to upgrade now though