diff --git a/_site/assets/css/default.css b/_site/assets/css/default.css index 779ccfd..2b7ab50 100644 --- a/_site/assets/css/default.css +++ b/_site/assets/css/default.css @@ -94,3 +94,8 @@ img.letterboxd { background-color: gold; color: black; } + +table, th, td { + border: 1px solid; + padding: 5px; +}| diff --git a/_site/blog/2023/01/14/musings-on-the-cinema/index.html b/_site/blog/2023/01/14/musings-on-the-cinema/index.html index cf669f3..0caa0f4 100644 --- a/_site/blog/2023/01/14/musings-on-the-cinema/index.html +++ b/_site/blog/2023/01/14/musings-on-the-cinema/index.html @@ -10,6 +10,7 @@ + @@ -106,12 +107,12 @@ -->
-

- Musings on the power of cinema +

+ Musings on the power of cinema

-

+

 14 Jan 2023   @@ -129,4 +130,4 @@ - \ No newline at end of file + diff --git a/_site/blog/2023/03/05/yuri-felsen-on-love/index.html b/_site/blog/2023/03/05/yuri-felsen-on-love/index.html index 18b696c..7030268 100644 --- a/_site/blog/2023/03/05/yuri-felsen-on-love/index.html +++ b/_site/blog/2023/03/05/yuri-felsen-on-love/index.html @@ -10,6 +10,7 @@ + @@ -106,12 +107,12 @@ -->

-

- Yuri Felsen on love +

+ Yuri Felsen on love

-

+

 05 Mar 2023   @@ -133,4 +134,4 @@ - \ No newline at end of file + diff --git a/_site/blog/2023/03/10/putting-thoughts-into-action/index.html b/_site/blog/2023/03/10/putting-thoughts-into-action/index.html index bf56699..f7f3570 100644 --- a/_site/blog/2023/03/10/putting-thoughts-into-action/index.html +++ b/_site/blog/2023/03/10/putting-thoughts-into-action/index.html @@ -10,6 +10,7 @@ + @@ -106,12 +107,12 @@ -->

-

- A measure of how easily thoughts can be translated to action +

+ A measure of how easily thoughts can be translated to action

-

+

 10 Mar 2023   @@ -149,4 +150,4 @@ - \ No newline at end of file + diff --git a/_site/blog/2023/04/29/links-arent-performances/index.html b/_site/blog/2023/04/29/links-arent-performances/index.html index 3e78e81..8a33a4f 100644 --- a/_site/blog/2023/04/29/links-arent-performances/index.html +++ b/_site/blog/2023/04/29/links-arent-performances/index.html @@ -10,6 +10,7 @@ + @@ -106,12 +107,12 @@ -->

-

- Links aren't performances +

+ Links aren't performances

-

+

 29 Apr 2023   @@ -133,4 +134,4 @@ - \ No newline at end of file + diff --git a/_site/feed.xml b/_site/feed.xml index 4e52663..e0aef21 100644 --- a/_site/feed.xml +++ b/_site/feed.xml @@ -1,4 +1,207 @@ -Jekyll2023-11-06T13:57:50+00:00http://localhost:4000/feed.xmlAndrew ConlinLinks aren’t performances2023-04-29T00:00:00+01:002023-04-29T00:00:00+01:00http://localhost:4000/blog/2023/04/29/links-arent-performances“For starters, it finds that publishing a link can be a “performance” of a copyrighted work, which meant that when Linkletter linked to the world-viewable Youtube files that Proctorio had posted, he infringed on copyright.

+Jekyll2023-11-12T17:37:09+00:00http://localhost:4000/feed.xmlAndrew ConlinEnhancing Rock Paper Scissors2023-11-12T17:27:35+00:002023-11-12T17:27:35+00:00http://localhost:4000/blog/2023/11/12/rock-paper-scissorsAt least where I live, Rock Paper Scissors (henceforth referred to as RPS) is still the dominant way of quickly making a decision between friends. However, it is in desperate need of an update.

+ +

In this post, I will set out the existing problems with the game, then how I aim to resolve them, and conclude with a summary of the amazing of the brand-spanking new edition.

+ +

For the record, I am writing this post because the game is bad, not because I always lose to my girlfriend and have decided to change the rules rather than accept defeat1.

+ +

1. The problems

+
    +
  1. Lack of options
    2. +
  2. Scissors picked disproportionately
    3. +
  3. General lack of whimsy
    4. +
+ +

2. Fixing the problems

+

How many extra options should we add?

+

Graph theory

+

Before we dive in, let me give you some Graph Theory 101. First some terms:

+
    +
  • vertex: a point in space
    • +
  • edge: connects any two points
    • +
  • vertices are joined with edges to create graphs
    • +
  • to begin with, we will have undirected graphs, where edges have no direction associated with them
    • +
+ +

Therefore, to represent the current setup for RPS, we can have the following

+ + + + + +

Each possible hand is a vertex, and each edge is a game. In graph theory, a complete graph is one where every pair of vertices is connected by a unique edge. Intuitively you can see that rock, paper scissors is complete, otherwise there would be combinations that couldn’t be played against each other.

+ +

Another concept that I now need to introduce is that of degree. The degree of a vertex is the total number of edges it is connected to. This is the second criterion that we need to fulfill: Every vertex must have the same degree. This is known as a regular graph. The exisiting RPS graph is also regular, with degree 2 (2-regular). We need to satisfy this with our new graph.

+ +

It is now time to introduce direction to our graph, used to represent winners and losers. Here is the RPS graph with directions representing who will win each game, also known as a digraph.

+ + + +

Rock beats scissors etc. etc.

+ +

More specifically, we want an oriented graph. There shouldn’t be any bidirectionality between vertices, which would indicate a draw.

+ +

A complete, oriented graph is called a tournament.

+ +

Buidling on out definition of regularity from the non-directed graphs, we have directional regularity (indegree = outdegree). A tournament where each of the vertices is regular is called a “regular tournament”. This specific type of digraph satisfies all our criteria, and any new game that we create must be regular tournament.

+ +
    +
  1. complete (every hand can play every hand)
    2. +
  2. regular (every hand can participate in the same number of possible games)
    3. +
  3. oriented (every game results in a winner)
    4. +
  4. indegree = outdegree for all vertices (each hand wins as many as it loses)
    5. +
+ +

Number of regular tournaments for numbers of nodes (even no. of nodes excluded because they have an odd degree, and therefore no regular tournaments):

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
NodesDegreeRegular Tournaments
101
322
5424
762640
...
...
+ +

as much as I would love to look at all of the possible 2640 combinations for a 7 player tournament, 5 possible hands looks like our sweetspot here, both in terms of the possible winner/loser combinations and in terms of the brain capacity of people playing the game.

+ + + +

This took me so long to figure out2

+ +
+
    +
  1. +

    It’s like she’s in my head it’s crazy ↩

    +
    2. +
  2. +

    The notebook of a crazed madman ↩

    +
    3. +
+
]]>Andrew ConlinRock Paper Scissors2023-11-08T18:36:46+00:002023-11-08T18:36:46+00:00http://localhost:4000/2023/11/08/rock-paper-scissorsIntro +

Background

+

Rock, Paper, Scissors needs an update. +In this post I will set out the threory behind

+

How many extra options should we add?

+

Graph theory

+

Before we dive in, let me give you some Graph Theory 101. FIrst some terms:

+
    +
  • vertex: a point in space
    • +
  • edge: connects any two points
    • +
  • vertices are joined with edges to create graphs
    • +
  • to begin with, we will have undirected graphs, where edges have no direction associated with them
    • +
+ +

Therefore, to represent the current setup for RPS, we can have the following + “rock” + o + /
+ /
+ /
+ paper o——-o scissors

+ +

Each possible hand is a vertex, and each edge is a game. In graph theory, a complete graph is one where every pair of vertices is connected by a unique edge. Intuitively you can see that rock, paper scissors is complete, otherwise there would be combinations that couldn’t be played against each other.

+ +

Another concept that I now need to introduce is that of degree. The degree of a vertex is the total number of edges it is connected to. This is the second criterion that we need to fulfill: Every vertex must have the same degree. This is known as a regular graph. The exisiting RPS graph is also regular, with degree 2 (2-regular). We need to satisfy this with our new graph.

+ +

It is now time to introduce direction to our graph, used to represent winners and losers. Here is the RPS graph with directions representing who will win each game, also known as a digraph.

+ +
     "rock" 
+       o
+      ^ \
+     /   \
+    /     v  paper o <------o scissors
+
+ +

Rock beats scissors etc. etc.

+ +

More specifically, we want an oriented graph. There shouldn’t be any bidirectionality between vertices, which would indicate a draw.

+ +

A complete, oriented graph is called a tournament.

+ +

Buidling on out definition of regularity from the non-directed graphs, we have directional regularity (indegree = outdegree). A tournament where each of the vertices is regular is called a “regular tournament”. This specific type of digraph satisfies all our criteria, and any new game that we create must be regular tournament.

+ +
    +
  1. complete (every hand can play every hand)
    2. +
  2. regular (every hand can participate in the same number of possible games)
    3. +
  3. oriented (every game results in a winner)
    4. +
  4. indegree = outdegree for all vertices (each hand wins as many as it loses)
    5. +
+ +

Number of regular tournaments for numbers of nodes (even no. of nodes excluded because they have an odd degree, and therefore no regular tournaments): +| Nodes | Degree | Regular Tournaments | +|—————- | ————— | ————— | +| 1 | 0 | 1 | +| 3 | 2 | 2 | +| 5 | 4 | 24 | +| 7 | 6 | 2640 | +and so on…

+ +

as much as I would love to look at all of the possible 2640 combinations for a 7 player tournament, 5 possible hands looks like our sweetspot here, both in terms of the possble winner/loser combinations and in terms of the brain capacity of people playing the game.

]]>Andrew ConlinLinks aren’t performances2023-04-29T00:00:00+01:002023-04-29T00:00:00+01:00http://localhost:4000/blog/2023/04/29/links-arent-performances“For starters, it finds that publishing a link can be a “performance” of a copyrighted work, which meant that when Linkletter linked to the world-viewable Youtube files that Proctorio had posted, he infringed on copyright.

This is a perverse, even surreal take on copyright. The court rejects Linkletter’s argument that even Youtube’s terms of service warned Proctorio that publishing world-viewable material on its site constituted permission for people to link to and watch that material.”

diff --git a/_site/feed/blog.xml b/_site/feed/blog.xml index 6c42d47..8b560b2 100644 --- a/_site/feed/blog.xml +++ b/_site/feed/blog.xml @@ -1,4 +1,148 @@ -Jekyll2023-11-06T13:57:50+00:00http://localhost:4000/feed/blog.xml | BlogAndrew ConlinLinks aren’t performances2023-04-29T00:00:00+01:002023-04-29T00:00:00+01:00http://localhost:4000/blog/2023/04/29/links-arent-performances“For starters, it finds that publishing a link can be a “performance” of a copyrighted work, which meant that when Linkletter linked to the world-viewable Youtube files that Proctorio had posted, he infringed on copyright.

+Jekyll2023-11-12T17:37:09+00:00http://localhost:4000/feed/blog.xml | BlogAndrew ConlinEnhancing Rock Paper Scissors2023-11-12T17:27:35+00:002023-11-12T17:27:35+00:00http://localhost:4000/blog/2023/11/12/rock-paper-scissorsAt least where I live, Rock Paper Scissors (henceforth referred to as RPS) is still the dominant way of quickly making a decision between friends. However, it is in desperate need of an update.

+ +

In this post, I will set out the existing problems with the game, then how I aim to resolve them, and conclude with a summary of the amazing of the brand-spanking new edition.

+ +

For the record, I am writing this post because the game is bad, not because I always lose to my girlfriend and have decided to change the rules rather than accept defeat1.

+ +

1. The problems

+
    +
  1. Lack of options
    2. +
  2. Scissors picked disproportionately
    3. +
  3. General lack of whimsy
    4. +
+ +

2. Fixing the problems

+

How many extra options should we add?

+

Graph theory

+

Before we dive in, let me give you some Graph Theory 101. First some terms:

+
    +
  • vertex: a point in space
    • +
  • edge: connects any two points
    • +
  • vertices are joined with edges to create graphs
    • +
  • to begin with, we will have undirected graphs, where edges have no direction associated with them
    • +
+ +

Therefore, to represent the current setup for RPS, we can have the following

+ + + + + +

Each possible hand is a vertex, and each edge is a game. In graph theory, a complete graph is one where every pair of vertices is connected by a unique edge. Intuitively you can see that rock, paper scissors is complete, otherwise there would be combinations that couldn’t be played against each other.

+ +

Another concept that I now need to introduce is that of degree. The degree of a vertex is the total number of edges it is connected to. This is the second criterion that we need to fulfill: Every vertex must have the same degree. This is known as a regular graph. The exisiting RPS graph is also regular, with degree 2 (2-regular). We need to satisfy this with our new graph.

+ +

It is now time to introduce direction to our graph, used to represent winners and losers. Here is the RPS graph with directions representing who will win each game, also known as a digraph.

+ + + +

Rock beats scissors etc. etc.

+ +

More specifically, we want an oriented graph. There shouldn’t be any bidirectionality between vertices, which would indicate a draw.

+ +

A complete, oriented graph is called a tournament.

+ +

Buidling on out definition of regularity from the non-directed graphs, we have directional regularity (indegree = outdegree). A tournament where each of the vertices is regular is called a “regular tournament”. This specific type of digraph satisfies all our criteria, and any new game that we create must be regular tournament.

+ +
    +
  1. complete (every hand can play every hand)
    2. +
  2. regular (every hand can participate in the same number of possible games)
    3. +
  3. oriented (every game results in a winner)
    4. +
  4. indegree = outdegree for all vertices (each hand wins as many as it loses)
    5. +
+ +

Number of regular tournaments for numbers of nodes (even no. of nodes excluded because they have an odd degree, and therefore no regular tournaments):

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
NodesDegreeRegular Tournaments
101
322
5424
762640
...
...
+ +

as much as I would love to look at all of the possible 2640 combinations for a 7 player tournament, 5 possible hands looks like our sweetspot here, both in terms of the possible winner/loser combinations and in terms of the brain capacity of people playing the game.

+ + + +

This took me so long to figure out2

+ +
+
    +
  1. +

    It’s like she’s in my head it’s crazy ↩

    +
    2. +
  2. +

    The notebook of a crazed madman ↩

    +
    3. +
+
]]>Andrew ConlinLinks aren’t performances2023-04-29T00:00:00+01:002023-04-29T00:00:00+01:00http://localhost:4000/blog/2023/04/29/links-arent-performances“For starters, it finds that publishing a link can be a “performance” of a copyrighted work, which meant that when Linkletter linked to the world-viewable Youtube files that Proctorio had posted, he infringed on copyright.

This is a perverse, even surreal take on copyright. The court rejects Linkletter’s argument that even Youtube’s terms of service warned Proctorio that publishing world-viewable material on its site constituted permission for people to link to and watch that material.”

diff --git a/_site/feed/til.xml b/_site/feed/til.xml index 4e13108..e48e535 100644 --- a/_site/feed/til.xml +++ b/_site/feed/til.xml @@ -1,4 +1,4 @@ -Jekyll2023-11-06T13:57:50+00:00http://localhost:4000/feed/til.xml | TilAndrew ConlinRunning a Python script periodically in a Docker container using cron2023-04-19T00:00:00+01:002023-04-19T00:00:00+01:00http://localhost:4000/til/running-python-in-cron-in-dockerRecently, my partner gave a great idea for utilising my old Kindle: generate a “newspaper” each morning from a bunch of RSS feeds, and email it to the Kindle using “Send-to-Kindle” feature (a blog post about this project is in the works).

+Jekyll2023-11-12T17:37:09+00:00http://localhost:4000/feed/til.xml | TilAndrew ConlinRunning a Python script periodically in a Docker container using cron2023-04-19T00:00:00+01:002023-04-19T00:00:00+01:00http://localhost:4000/til/running-python-in-cron-in-dockerRecently, my partner gave a great idea for utilising my old Kindle: generate a “newspaper” each morning from a bunch of RSS feeds, and email it to the Kindle using “Send-to-Kindle” feature (a blog post about this project is in the works).

I loved this idea, and thought it would be no problem to get a Python script up and running periodically on my Raspberry Pi home server using cron. However, I ran into various issues along the way (some of which were not so easy to resolve), so I’m collating all the configuration changes I made in the hopes that it will be useful to someone one day. You can find the full repo for this project here, and I have also included my Dockerfile, docker-compose.yml and crontab at the end of this TIL.

diff --git a/_site/index.html b/_site/index.html index 03136f5..d41cd09 100644 --- a/_site/index.html +++ b/_site/index.html @@ -10,6 +10,7 @@ + @@ -106,17 +107,33 @@ -->
-

- latest posts +

+ latest posts

all the posts, in reverse chronological. there is an atom feed above. -

+

    +
  • +

    Enhancing Rock Paper Scissors

    +
    +  12 Nov 2023 +
    + At least where I live, Rock Paper Scissors (henceforth referred to as RPS) is still the dominant way of quickly making a decision between friends. However, it is in desperate... +
    +
    +
    • + + + + + + +

  • Links aren't performances

    @@ -181,4 +198,4 @@ - \ No newline at end of file + diff --git a/_site/index_old/index.html b/_site/index_old/index.html deleted file mode 100644 index 6ae3436..0000000 --- a/_site/index_old/index.html +++ /dev/null @@ -1,137 +0,0 @@ - - - - - - - - - andrew conlin - - - - - - -
    -
    -
    -
    -
    - andrew conlin
    - software engineer @ MathWorks
    -  
    - -
    -

    - -  blog - -

    -
    - -
    -

    - -  til - -

    -
    - -
    -

    - -  projects - -

    -
    - -
    -

    - -  photos↗ - -

    -
    - -  
    - -
    -
    -
    - - -
    -

    - about me -

    -

    - -

    -
    - -
    -Hi! My name is Andrew Conlin. I am a software engineer and photographer, currently based in Cambridge, England. -
    -
    -My main hobbies are film photography and running. I love watching movies, especially in the cinema. I love post-punk, dreampop and experimental hip hop. I love drinking good coffee, good beer and good whisky. I am also a passionate self-hoster, and like to think that I'm at least somewhat privacy conscious. -
    -
    -I mainly use this site as a space for my blog, where I post interesting things I've found, and some of my (not so interesting) thoughts. Inspired by Simon Willison, I also post my TIL series here. Any time I run into a weird error while programming, I post the full error message and the fix that I found, to hopefully help someone down the line. -
    -
    -

    contact

    -
    -You can email me, or use any of the socials in the nav menu. -
    -
    -
    -
    - - - - \ No newline at end of file diff --git a/_site/sitemap.xml b/_site/sitemap.xml index 11c4da9..285f2d5 100644 --- a/_site/sitemap.xml +++ b/_site/sitemap.xml @@ -25,10 +25,15 @@ 2023-04-29T00:00:00+01:00 -http://localhost:4000/ +http://localhost:4000/2023/11/08/rock-paper-scissors/ +2023-11-08T18:36:46+00:00 -http://localhost:4000/index_old/ +http://localhost:4000/blog/2023/11/12/rock-paper-scissors/ +2023-11-12T17:27:35+00:00 + + +http://localhost:4000/ http://localhost:4000/til/ diff --git a/_site/til/index.html b/_site/til/index.html index aa40a4a..10875f6 100644 --- a/_site/til/index.html +++ b/_site/til/index.html @@ -10,6 +10,7 @@ + @@ -106,12 +107,12 @@ -->
    -

    - latest tils +

    + latest tils

    my collection of tils (today-i-learned). i use this mainly to collect solutions to weird errors i have faced, and detail the little projects that i work on. this has its own atom feed (above) as they are typically very different from my other posts. all tils are blog posts but not all blog posts are tils. -

    +

      @@ -120,6 +121,12 @@ + + + + + +

    • Running a Python script periodically in a Docker container using cron

      @@ -161,4 +168,4 @@ - \ No newline at end of file + diff --git a/_site/til/nextcloud-php-errors/index.html b/_site/til/nextcloud-php-errors/index.html index df4947f..5ff50e3 100644 --- a/_site/til/nextcloud-php-errors/index.html +++ b/_site/til/nextcloud-php-errors/index.html @@ -10,6 +10,7 @@ + @@ -106,12 +107,12 @@ -->
      -

      - Fixing php errors in a Nextcloud docker-compose configuration +

      + Fixing php errors in a Nextcloud docker-compose configuration

      -

      +

       01 Mar 2023   @@ -171,4 +172,4 @@ This led me to running this command:

      - \ No newline at end of file + diff --git a/_site/til/running-python-in-cron-in-docker/index.html b/_site/til/running-python-in-cron-in-docker/index.html index 02d0653..d685962 100644 --- a/_site/til/running-python-in-cron-in-docker/index.html +++ b/_site/til/running-python-in-cron-in-docker/index.html @@ -10,6 +10,7 @@ + @@ -106,12 +107,12 @@ -->
      -

      - Running a Python script periodically in a Docker container using cron +

      + Running a Python script periodically in a Docker container using cron

      -

      +

       19 Apr 2023   @@ -225,4 +226,4 @@ PYTHONPATH=/usr/bin/local/python3 - \ No newline at end of file +