Luis Borjas Reyes

computer person, math misunderstander
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Luis's Collections

Open Source

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Blog Posts

3 Highlights
What Luis's working on

What Luis's working on

2021
Dec 30, 2021
Dec 30, 2021
Wrote a new blog post about providing optics, and the state of the art of optics representations: https://tech.lfborjas.com/optics/ 
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Dec 03, 2021
Dec 03, 2021
First release candidate of my little library to work with pre-calculated ephemeris data to find events of interest: https://github.com/lfborjas/almanac 
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Nov 12, 2021
Nov 12, 2021
Finally got around to writing about my last year-ish doing some intense yak-shaving in Haskell: https://tech.lfborjas.com/haskell-field-notes-1/
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Nov 12, 2021
Nov 12, 2021
Merged a pretty big update to my Haskell bindings to swiss ephemeris:

  • Refactored the time type to be able to type-safely work with universal or ephemeris types without mixing them up.
  • Introduced a way to generate and read "precalculated" ephemeris in a binary file, making sequential reads of multi-planet ephemeris much faster.
  • Ported a few functions for heliocentric "crossing" finding (when a given planet may cross a given longitude,) as well as a couple of original functions not provided by the underlying C library: geocentric crossing if the rough beginning and end times are known, and when a moon phase may become exact.
  • Ported functions for eclipses and planetary phenomena.
Whole thing at: https://github.com/lfborjas/swiss-ephemeris/pull/37 
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2020
Oct 29, 2020
Oct 29, 2020
Published a blog post about how I haven't published blog posts in over a decade: https://tech.lfborjas.com/a-decade-long-hiatus/
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Oct 17, 2020
Oct 17, 2020
Launched my free, open-source natal chart site -- written in Haskell!

https://freenatalchart.xyz/
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