Skip to content

Instantly share code, notes, and snippets.

View tomsaleeba's full-sized avatar

Tom Saleeba tomsaleeba

View GitHub Profile
tomsaleeba /
Last active November 24, 2020 03:57
Pollin8 model tuning

Note: make sure you view this page on this URL with a trailing slash otherwise images won't work. More info.

What is this?

An attempt to get the model reporting the kinds of numbers that we'd expect to see based on expert opinion.

All of these runs are done including the "children inherit parent

tomsaleeba /
Created July 9, 2020 07:02
Test if we can modify IndexedDB records (not upgrade the DB version) in one connection while another connection is open. Spoiler, we can!

To run this test, copy and paste the script into the JS console of your browser (or use Snippets in Chrome devtools).

The output is:

req1 success
req2 success
req3 success
tomsaleeba / tail-recursion.js
Created May 30, 2020 04:29
Tail resursion in JS
// the non-tail-recursive way
;(() => {
function fac(n) {
if (n === 1) {
return 1
const nextFac = fac(n - 1)
return n * nextFac // last thing we do it multiply
tomsaleeba / can-js-promises-be-cancelled.js
Created April 29, 2020 11:57
A test to see if you can truly cancel JS promises. Spoiler: you can't.
// Question: does calling reject on a running promise cut it short?
// Answer: sort of. It returns to the caller early but it keep running behind
// the scenes. So more of a short-circuit than really being cancelled.
const printFrequency = 500
const printRounds = 10
const cancelPoint = 7
let someOtherState = 'untouched'
tomsaleeba /
Created April 16, 2020 09:02
How to add watermarks with ImageMagick
$ magick --version
Version: ImageMagick 7.0.10-3 Q16 x86_64 2020-03-28
Copyright: © 1999-2020 ImageMagick Studio LLC
Features: Cipher DPC HDRI Modules OpenMP(4.5) 
Delegates (built-in): bzlib cairo fontconfig freetype heic jbig jng jp2 jpeg lcms lqr ltdl lzma openexr pangocairo png raqm raw rsvg tiff webp wmf x xml zlib

The command

tomsaleeba / puzzle.jpg
Last active April 15, 2020 00:42
Kimmy's "dress the man" puzzle
tomsaleeba /
Last active December 11, 2019 07:09
iNat bulk upload instructions

Which method is for me?

If you have a bunch of photos to upload, and they have location information embedded in the photo, then you have a few options.

  1. If they're on your phone, you can use our app (at the time of writing our app doesn't yet support reading the location information from photos, but it will)
  2. Use the "regular" upload method for iNat via their website

If you have observations that do not have a photo, or do have a photo but the photo does not have location information embedded in it, then the CSV based bulk upload if the best choice.

tomsaleeba /
Last active February 20, 2019 04:06
FISH shell VI keybindings with ctrl-<arrow> word navigation
  1. enable VI mode
  2. restore the word navigation keys I'm used to in insert mode
    cat << EOF > ~/.config/fish/functions/
    function fish_user_key_bindings
      bind -M insert \e\[1\;5C nextd-or-forward-word   # ctrl-right

bind -M insert \e[1;5D prevd-or-backward-word # ctrl-left

tomsaleeba /
Last active June 16, 2023 11:09
Debugging HTTP traffic with mitmproxy

This will let you see the request and response headers for traffic going through.

We're going to run this as a reverse proxy, rather than a usual proxy, so you don't get completely flooded with traffic.

Start the proxy

  1. create a new VM
  2. expose port 8080 to the public internet
  3. SSH to the VM
  4. make sure you have at least python 3.6
tomsaleeba / extract-subgraph-3levels.rq
Last active March 13, 2023 10:24
Extracting RDF subgraphs using SPARQL
# this query extracts a subgraph from the selected subject (level 1) and two child levels
PREFIX aekos: <>
PREFIX some_dataset: <>
?s1 ?p1 ?o1 .
?s1 ?pv1 ?v1 .
?s2 ?p2 ?o2 .
?s2 ?pv2 ?v2 .
?s3 ?p3 ?o3 .