Today I Learned

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pathlib (1)
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python (4)
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Welcome!

This site is the Today I Learned (TIL) collection of O957.

Each entry:

  • Records the date it was learned, the date it was added, and the last date on which it was substantially edited.
  • Walks through the initial problem or material that prompted it, with runnable code where applicable.
  • Links to the documentation or external resources consulted along the way.

How This Site Is Organized

Entries are grouped by programming language (e.g. Python) or discipline (e.g. Epidemiology). New sections appear as entries accumulate, day by day.

Source

This book lives on GitHub at https://github.com/O957/O957-TIL and is licensed under the Apache License 2.0 license.

Corrections and suggestions are welcome via issues, but please first consult the contributing file and code of conduct.

Title Reading Time Date
Switch To VSCodium From VSCode 2 min Dec 1, 2025
Opening VS Code From The Terminal Via Code 13 min Nov 30, 2025
Handling Unbound Tidyr Variables Using Rlang Data Masking 5 min Nov 30, 2025
Find Empty PDFs Using Pathlib 1 min Nov 20, 2025
Check CSV Equivalence Using Polars 1 min Nov 20, 2025
Uniformly Partitioning A String Using Textwrap 1 min Nov 13, 2025
Get The Remaining Dates In A Year Using Datetime 4 min Nov 11, 2025
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Source Code
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  contents: "posts"
  fields: [title, reading-time, date]
  sort: "date desc"
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# Welcome! {.unnumbered}

This site is the _Today I Learned_ (TIL) collection of [O957](https://github.com/O957).

Each entry:

* Records the date it was _learned_, the date it was _added_, and the last date on which it was substantially _edited_.
* Walks through the initial problem or material that prompted it, with runnable code where applicable.
* Links to the documentation or external resources consulted along the way.

## How This Site Is Organized

Entries are grouped by programming language (e.g. Python) or discipline (e.g. Epidemiology). New sections appear as entries accumulate, day by day.

## Source

This book lives on GitHub at <https://github.com/O957/O957-TIL> and is licensed under the [Apache License 2.0](https://github.com/O957/O957-TIL/blob/main/LICENSE) license.

Corrections and suggestions are welcome via [issues](https://github.com/O957/O957-TIL/issues), but please first consult the [contributing](https://github.com/O957/O957-TIL/CONTRIBUTING.md) file and [code of conduct](CODE_OF_CONDUCT.md).

© 2025—2026 O957 · Apache License 2.0

 
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