Simon Willison: TIL

Things I've learned, collected in simonw/til.

Recently added: Redirects for Datasette, Dropdown menu with details summary, Decorators with optional arguments, Writing JavaScript that responds to media queries, Explicit file encodings using click.File

datasette

Redirects for Datasette - 2020-11-25

javascript

Dropdown menu with details summary - 2020-10-31
Writing JavaScript that responds to media queries - 2020-10-21
Manipulating query strings with URLSearchParams - 2020-10-04
Minifying JavaScript with npx uglify-js - 2020-08-30
Dynamically loading multiple assets with a callback - 2020-08-21
Working around the size limit for nodeValue in the DOM - 2020-08-21
Implementing a "copy to clipboard" button - 2020-07-23

python

Decorators with optional arguments - 2020-10-28
Explicit file encodings using click.File - 2020-10-16
Understanding option names in Click - 2020-09-22
Debugging a Click application using pdb - 2020-09-03
Outputting JSON with reduced floating point precision - 2020-08-21
How to call pip programatically from Python - 2020-08-11
Password hashing in Python with pbkdf2 - 2020-07-13
Introspecting Python function parameters - 2020-05-27
Build the official Python documentation locally - 2020-05-08
Use setup.py to install platform-specific dependencies - 2020-05-05
Installing and upgrading Datasette plugins with pipx - 2020-05-04
Generated a summary of nested JSON data - 2020-04-28
macOS Catalina sort-of includes Python 3 - 2020-04-21
Convert a datetime object to UTC without using pytz - 2020-04-19

homebrew

Upgrading Python Homebrew packages using pip - 2020-10-14
Browsing your local git checkout of homebrew-core - 2020-08-27
Packaging a Python CLI tool for Homebrew - 2020-08-11

github

Searching for repositories by topic using the GitHub GraphQL API - 2020-10-09
Paginating through the GitHub GraphQL API with Python - 2020-07-09
Accessing repository dependencies in the GitHub GraphQL API - 2020-04-30

digitalocean

Running Datasette on DigitalOcean App Platform - 2020-10-06

selenium

Using async/await in JavaScript in Selenium - 2020-10-02
Installing Selenium for Python on macOS with ChromeDriver - 2020-10-02

bash

Escaping strings in Bash using !:q - 2020-10-01
Looping over comma-separated values in Bash - 2020-09-01

sqlite

Figuring out if a text value in SQLite is a valid integer or float - 2020-09-27
Compiling the SQLite spellfix.c module on macOS - 2020-09-19
Enabling WAL mode for SQLite database files - 2020-08-09
SQLite BLOB literals - 2020-07-29
Using LD_PRELOAD to run any version of SQLite with Python - 2020-06-17
List all columns in a SQLite database - 2020-05-06
Compile a new sqlite3 binary on Ubuntu - 2020-04-30
Null case comparisons in SQLite - 2020-04-21
Lag window function in SQLite - 2020-04-19

jinja

Turning on Jinja autoescaping when using Template() directly - 2020-09-18

github-actions

Talking to a PostgreSQL service container from inside a Docker container - 2020-09-18
Open a debugging shell in GitHub Actions with tmate - 2020-09-14
Skipping a GitHub Actions step without failing - 2020-08-22
Using grep to write tests in CI - 2020-08-19
Updating a Markdown table of contents with a GitHub Action - 2020-07-22
Running different steps on a schedule - 2020-04-20
Commit a file if it changed - 2020-04-19
Set environment variables for all steps in a GitHub Action - 2020-04-19
Dump out all GitHub Actions context - 2020-04-19
Only run GitHub Action on push to master / main - 2020-04-19

linux

Basic strace to see what a process is doing - 2020-09-07
Piping echo to a file owned by root using sudo and tee - 2020-08-24

aws

Display EC2 instance costs per month - 2020-09-06

typescript

Very basic tsc usage - 2020-09-06

cloudrun

Using the gcloud run services list command - 2020-09-01
How to deploy a folder with a Dockerfile to Cloud Run - 2020-08-04
Use labels on Cloud Run services for a billing breakdown - 2020-04-21

pytest

Start a server in a subprocess during a pytest session - 2020-08-31
Code coverage using pytest and codecov.io - 2020-08-15
Registering temporary pluggy plugins inside tests - 2020-07-21
Asserting a dictionary is a subset of another dictionary - 2020-05-28
How to mock httpx using pytest-mock - 2020-04-29
Session-scoped temporary directories in pytest - 2020-04-26

jq

Converting Airtable JSON for use with sqlite-utils using jq - 2020-08-28

markdown

Rendering Markdown with the GitHub Markdown API - 2020-08-22
Converting HTML and rich-text to Markdown - 2020-05-09

svg

Creating a dynamic line chart with SVG - 2020-08-22

ics

Providing a "subscribe in Google Calendar" link for an ics feed - 2020-08-21

macos

Finding the largest SQLite files on a Mac - 2020-08-19
Fixing "compinit: insecure directories" error - 2020-04-26
Close terminal window on Ctrl+D for macOS - 2020-04-21
Get Skitch working on Catalina - 2020-04-21
Running pip install -e .[test] in zsh on macOS Catalina - 2020-04-21

heroku

Programatically accessing Heroku PostgreSQL from GitHub Actions - 2020-08-18
Upgrading a Heroku PostgreSQL database with pg:copy - 2020-07-20
Using heroku pg:pull to restore a backup to a macOS laptop - 2020-07-10

readthedocs

Read the Docs Search API - 2020-08-16
Pointing a custom subdomain at Read the Docs - 2020-08-14

zsh

Customizing my zsh prompt - 2020-08-12

docker

Attaching a bash shell to a running Docker container - 2020-08-10

django

PostgreSQL full-text search in the Django Admin - 2020-07-25

asgi

Writing tests for the ASGI lifespan protocol with HTTPX - 2020-06-29

pypi

Adding project links to PyPI - 2020-05-11

firefox

Search across all loaded resources in Firefox - 2020-05-05

node

Constant-time comparison of strings in Node - 2020-05-01

tailscale

Restricting SSH connections to devices within a Tailscale network - 2020-04-23

presenting

Using macOS stickies to display a workshop link on the screen - 2020-04-20

zeit-now

Running a Python ASGI app on Zeit Now v2 - 2020-04-19