Behold the epic tale of Janet's #PEG #module, where the author heroically excludes regular expressions like they're yesterday's news. 
Marvel at the labyrinth of #parsing magic that claims to be more readable, but only if you have a PhD in arcane text processing. 
https://bakpakin.com/writing/how-janets-peg-works.html #Janet #readability #textprocessing #regex #HackerNews #ngated
Just released dumbql v0.2.0 — a simple and data-provider-agnostic query language for Go programs. Made for YouTube tutorial (in progress), but might be useful anyway.
Shifting Roles Inside Pinnacle Entertainment Group
https://peginc.com/shifting-roles-inside-pinnacle-entertainment-group/ #SavageWorlds #JodiBlack #Licensee #Pinnacle #News #PEG
Практика использования парсер-комбинаторов peco и оператора match для создания простых DSL на языке Python
Задачи разработки компиляторов и интерпретаторов конфигурационных языков или даже полноценных Тьюринг-полных языков программирования время от времени встают перед разработчиками программного обеспечения. На практике, как правило, речь идёт о разработке предметно-ориентированных языков (англ. Domain Specific Language, DSL), проектируемых специально для решения узкого класса прикладных задач. В настоящей статье рассматривается один из способов реализации DSL-компиляторов на примере разработки системы символьного дифференцирования, с использованием парсер-комбинаторов peco и структурного сопоставления с образцом по PEP 636 . Материал рассчитан на прикладных разработчиков, уже знакомых с Python, но, надеюсь, может быть полезен и продолжающим компиляторщикам.
The boys find fault with feelings, set sail on a steam powered yacht, and use the scientific method to conduct an autopsy on the corpse of Steely Dan’s 1977 art pop hit, “Peg.” News items and digressions include lexical diversity and Tony Iommi’s “Monkey.”
#YachtRock #steelydan #podcast #rock #peg #aja https://open.spotify.com/episode/6arhYPTipEWLXqENU5RRqC?si=KsH_-tDWR_KlJk7mOMh1Pg
Having a problem with #guile #peg #parsing library: https://lists.gnu.org/archive/html/guile-user/2024-10/msg00002.html
Does anyone know, whether it is possible using that library to have mutually recursive pattern definitions? Or is that library kind of broken?
Side questing into PEGs and #EBNF grammars (that I only barely understand) to parse #CSS.
https://pypi.org/project/pyparsing/ looks useful, but I found this rudimentary CSS #PEG (https://gist.github.com/erikrose/5624176) which can be used by https://pypi.org/project/parsimonious/ and it… appears to work?
I was already re-writing the current CSS processing (remove the recusion, add in dataclasses to encapsulate domains, etc), but maybe using a more formal grammar would be a good idea. #python
Context free grammars (CFG) are better than parsing expression grammars (PEG), because CFGs represent how we think.
Parser combinators are similar to PEGs, so they are worse than CFGs, too.
So, don't use Rust libraries nom, combine. Use lalrpop.
Don't use Haskell libraries parsec, gigaparsec, attoparsec, megaparsec, trifecta. Use Earley, happy.
See more detailed story in my new article https://safinaskar.writeas.com/this-is-why-you-should-never-use-parser-combinators-and-peg .
The story also includes some cases, where PEG and parser combinators may still be useful. Also, the article gives links to my Haskell parsing libraries.
"I like what you say about the old myth of Theseus and Ariande. Theseus says to Ariande, "I'll love you forever if you can show me a way to come out of the labyrinth." So she gives him a ball of string, which he unwinds as he goes into the labyrinth, and then follows to find the way out. You say, "All he had was the string. That's all you need." - #SkywalkerRanch California, 1986
Created my first Peggy grammar to parse and evaluate some custom expressions. It was surprisingly easy once I got the hang of the syntax, and very powerful with the JavaScript actions to process and transform expression matches. 
