Fast Parse
Advent-of-Code
Fast Parse | Advent-of-Code | |
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4 | 42 | |
1,076 | 9 | |
0.2% | - | |
4.6 | 8.6 | |
21 days ago | 4 months ago | |
Scala | Python | |
MIT License | - |
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For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Fast Parse
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How do I remove the forward reference error in my parser? (20 lines)
Perhaps use Li Haoyi's fastparse instead? https://github.com/com-lihaoyi/fastparse
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Parse slightly dirty, poorly escaped XML
You might want to adapt Li Haoyi’s XML parser for fastparse.
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-🎄- 2021 Day 18 Solutions -🎄-
Mostly a mess of pattern matching. I really need to make some generic tree utilities. Haven't been able to find a decent parser combinator that works in Scala 3 (I usually use fastparse which depends heavily on Scala 2 macros, and scala-parser-combinators works in Scala 3, but I've had a lot of trouble getting it to not be too greedy), so I used the state monad from cats to parse at the bottom of the file, which I think turned out fairly nice.
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Parser generators vs. handwritten parsers: surveying major languages in 2021
Agreed! I would say that parser combinators are the sweet spot and the right choice in most cases.
Scala has them as well, e.g.: https://com-lihaoyi.github.io/fastparse/
And the good thing is, you don't have to learn a completely new language/syntax, you can use the host language's syntax and you have full IDE support as well.
Advent-of-Code
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-❄️- 2023 Day 11 Solutions -❄️-
Fun one :D
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-❄️- 2023 Day 10 Solutions -❄️-
Way trickier than I was expecting
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-❄️- 2023 Day 9 Solutions -❄️-
:D
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-❄️- 2023 Day 8 Solutions -❄️-
Classic LCM
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-❄️- 2023 Day 7 Solutions -❄️-
Who wants spaghetti?
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-❄️- 2023 Day 6 Solutions -❄️-
Much easier than yesterday's :D
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-🎄- 2022 Day 12 Solutions -🎄-
195/242
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-🎄- 2022 Day 11 Solutions -🎄-
Messy. Thankfully got part two pretty quickly recognizing that we can mod the worry level by the product of the test integers. Might refactor / clean this up tomorrow morning
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-🎄- 2022 Day 10 Solutions -🎄-
2343 / 2119
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-🎄- 2022 Day 6 Solutions -🎄-
Impressive how fast everyone was with this one today
What are some alternatives?
Parboiled2 - A macro-based PEG parser generator for Scala 2.10+
adventofcode - Advent of Code solutions of 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022 and 2023 in Scala
Scala Parser Combinators - simple combinator-based parsing for Scala. formerly part of the Scala standard library, now a separate community-maintained module
AdventOfCode-Java - adventOfCode(Language.JAVA);
atto - friendly little parsers
AoC - my personal repo for the advent of code yearly challenge
Scopt - command line options parsing for Scala
Advent_of_Code_in_Pascal - My solutions to the Advent of Code, in Free Pascal
Kaitai Struct - Kaitai Struct: declarative language to generate binary data parsers in C++ / C# / Go / Java / JavaScript / Lua / Nim / Perl / PHP / Python / Ruby
adventofcode - Solutions for problems from AdventOfCode.com
decline - A composable command-line parser for Scala.
AdventOfCode - My Advent of Code solutions. I also upload videos of my solves: https://www.youtube.com/channel/UCuWLIm0l4sDpEe28t41WITA