Elsewhere
Release TIL Research Tool Museum Sighting Comment
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TIL
Using Tesseract.js to OCR every image on a page
— Pasting this code into a DevTools console should load [Tesseract.js](https://github.com/naptha/tesseract.js) from a CDN, loop through every image loaded by that page (every PNG, GIF, JPG or JPEG), run OCR on them and output the result to the DevTools console.
TIL
Annotated code for a demo of WebSocket chat in Deno Deploy
— Deno Deploy is a hosted Deno service that promises [a multi-tenant JavaScript engine running in 25 data centers across the world](https://deno.com/blog/deploy-beta1/).
TIL
Basic Datasette in Kubernetes
— This recipe for deploying the official `datasetteproject/datasette` container in Kubernetes just worked for me. It uses an interesting (possibly nasty?) trick to install plugins and download a SQLite database file on container startup, without needing to bake a brand new container image.
TIL
Quick and dirty mock testing with mock_calls
— I needed to write a test that checked for a really complex sequence of mock calls for [s3-credentials#3](https://github.com/simonw/s3-credentials/issues/3).
TIL
Using VCR and pytest with pytest-recording
— [pytest-recording](https://github.com/kiwicom/pytest-recording) is a neat pytest plugin that makes it easy to use the [VCR library](https://vcrpy.readthedocs.io/), which helps write tests against HTTP resources by automatically capturing responses and baking them into a YAML file to be replayed during the tests.
TIL
Understanding Kristofer Joseph's Single File Web Component
— [Via Brian LeRoux](https://twitter.com/brianleroux/status/1453472609518034944) I found [single-file-web-component.html](https://gist.github.com/kristoferjoseph/c4e47389ae0f0447db175b914e471628) by Kristofer Joseph. It's really clever! It demonstrates how to build a `<hello-world></hello-world>` custom Web Component in a single HTML file, using some neat tricks.
Sighting
2:12 PM – 2:19 PM
— American Crow, Heermann's Gull, Common Raven, in San Mateo County, CA, US
TIL
Removing a git commit and force pushing to remove it from history
— I accidentally triggered a commit which added a big chunk of unwanted data to my repository. I didn't want this to stick around in the history forever, and no-one else was pulling from the repo, so I decided to use force push to remove the rogue commit entirely.
TIL
Using the sqlite3 Python module in Pyodide - Python WebAssembly
— [Pyodide](https://github.com/pyodide/pyodide) provides "Python with the scientific stack, compiled to WebAssembly" - it's an incredible project which lets you run a full working Jupyter notebook, complete with complex packages such as numpy and pandas, entirely in your browser without any server-side Python component running at all.
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