These are the standard patterns for encoding precedence and associativity into an expresion grammar in (E)BNF.
Robert Jacobson rljacobson
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rljacobson
/ EBNF Precedence and Associativity Cheat Sheet.md
Created
November 29, 2023 07:07
EBNF Precedence and Associativity Cheat Sheet
rljacobson
/ Writing Rust libraries for the Python scientific computing ecosystem.md
Created
December 20, 2021 05:13
How to write Rust libraries for the Python scientific computing ecosystem
Source: https://www.reddit.com/r/rust/comments/rk12bg/writing_rust_libraries_for_the_python_scientific/
One of Rust's many strengths is that it can be seamlessly integrated with Python and speed up critical code sections. I recently wrote a small library with an efficient ragged array datatype, and I figured it would make for a good example of how to set up a Rust Python package with PyO3 and maturin that interoperates with numpy. There are a lot of little details that took me quite a while to figure out:
- Publishing to PyPI:
- GitHub action that builds and publishes wheels for multiple Python versions and operating systems
- Package dependencies and metadata must be specified in a [pyproject.toml](https://git
rljacobson
/ NASA Circuit Board Information.md
Last active
September 17, 2021 18:28
NASA Circuit Board Information
The circuit board is from a Tele-Dynamics Type 7201B-1CD-R Modem (Advertised as Model 7201.)
- Type 7201A/B-P
- Assembly 45443 (Prefix TD presumably refers to Tele-Dynamics)
- 45022-2 Rev A (on front side) and 45022-1 Rev A (on back side)
- S/N 149
- The date codes on the ICs indicate the circuit board was manufactured in the first quarter of 1972. The last launch of the Apollo Program, Apollo 17, was in December 1972
rljacobson
/ gist:869fc79d3060aa9377f4acfe66786370
Created
July 8, 2021 04:17
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rljacobson
/ Programmer Translations
Created
May 19, 2019 18:03
Translation of common programmer speak.
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| | What they said | What it means | | |
| |:---------------|:--------------| | |
| | "Why would you use X?" | "I do not understand X" | | |
| | "Only an idiot would use X." | "I am masking my insecurity and ignorance about X with aggression." | | |
| | "You should obviously use Y instead of X." | "I understand Y. If we shift the conversation to Y I can feel powerful again." | |