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objectionary

24 indexed repositories · View on GitHub

eo
EOLANG, an Experimental Pure Object-Oriented Programming Language Based on 𝜑-Calculus

Java · 1459 stars
eoc
Command-line toolkit for parsing, compiling, transpiling, optimizing, linking, dataizing, and running EOLANG programs

JavaScript · 36 stars
home
Centralized curated storage of all EO objects together with their unit tests

Shell · 35 stars
jeo-maven-plugin
This Maven plugin converts Java Bytecode binary files to EOLANG programs that use the "opcode" atom

Java · 23 stars
sodg.rs
Rust implementation of Surging Object DiGraph (SODG): it automatically collects garbage removing unnecessary nodes

Rust · 19 stars
eo-intellij-plugin
Syntax Highlighting Intellij IDEA Plugin for EO Programming Language

Java · 18 stars
phino
Command-Line Normalizer, Rewriter, and Dataizer of 𝜑-Calculus Expressions

Haskell · 18 stars
eo-graphs
A few classic graph algorithms implemented in C++, Java, and EOLANG

Java · 17 stars
news.eolang.org
Our Official Blog: we write about the development of EOLANG and 𝜑-calculus

HTML · 16 stars
reducing-programs-to-objects
LaTeX paper on how to reduce programs to EO objects

TeX · 15 stars
hone-maven-plugin
Maven plugin that applies a number of optimizations to your Bytecode, using EOLANG and 𝜑-calculus, trying to make it work faster

Java · 15 stars
game-of-life
Experimental implementation of Conway's Game of Life in C++ and EO: works from the command line

C++ · 14 stars
lints
A collection of style checkers for XMIR: they don't predict runtime errors, but prevent compilation mistakes

Java · 14 stars
on-the-origin-of-objects
On the Origin of Objects by Means of Careful Selection, LaTeX paper

TeX · 12 stars
reo
Experimental virtual dataflow machine for EO programs, based on SODG

Rust · 12 stars
aoi
Abstract Object inference for EO Programs

Java · 12 stars
eolang.sty
LaTeX package for drawing 𝜑-calculus formulas and SODG graphs

TeX · 11 stars
calculus-paper
The original paper introducing the 𝜑-calculus, on which the EO programming language is based

TeX · 11 stars
jucs
JUnit Classpath Sources: a simple framework for using classpath resources as JUnit sources

Java · 9 stars
xax
Java library for testing XSL stylesheets with XML samples and XPath assertions

Java · 9 stars
4 more repositories live on View on GitHub

Beginner friendly Everything

Open All

Five `du` runs and a full `diff` per class run even when `HONE_VERBOSE` is false Open

Difficulty 2/5 1-3 hours Newbie friendliness 85/100

objectionary/hone-maven-plugin#1041 · Opened Sep 19, 2026
The failure message always says `exit code 1`, because `atomic_write` throws away the real exit code Open

Difficulty 2/5 1-3 hours Newbie friendliness 86/100

objectionary/hone-maven-plugin#1040 · Opened Sep 19, 2026
`atomic_write` accepts a zero-byte result, so an empty `phino` output is shipped as the optimized class Open

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

objectionary/hone-maven-plugin#1039 · Opened Sep 19, 2026
`atomic_write` leaves its temp file behind when the watchdog kills the worker Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

objectionary/hone-maven-plugin#1038 · Opened Sep 19, 2026
`target/hone-extra` accumulates one more copy of every extra rule per run Open

Difficulty 3/5 1-2 days Newbie friendliness 78/100

objectionary/hone-maven-plugin#1037 · Opened Sep 19, 2026
A rewrite that only removes lines is recorded as `Changed=0`, so `Optimized X/Y` does not count it Open

Difficulty 3/5 1-2 days Newbie friendliness 74/100

objectionary/hone-maven-plugin#1036 · Opened Sep 19, 2026
`hone:summary` deletes the `hone-statistics.csv` that `hone:optimize` just produced in a single-module project Open

Difficulty 3/5 1-2 days Newbie friendliness 76/100

objectionary/hone-maven-plugin#1035 · Opened Sep 19, 2026
`mount()` accepts a relative `hone.target` and turns the bind mount into a named Docker volume Open

Difficulty 2/5 1-3 hours Newbie friendliness 84/100

objectionary/hone-maven-plugin#1034 · Opened Sep 19, 2026
`optimize` runs the container with `--privileged` and the host Docker socket, though nothing in the image can use either Open

Difficulty 1/5 Under an hour Newbie friendliness 90/100

objectionary/hone-maven-plugin#1033 · Opened Sep 19, 2026
The whole skip-if-fresh check in `rewrite.sh` is dead, because `entry.sh` deletes both directories it reads Open

Difficulty 4/5 3-5 days Newbie friendliness 68/100

objectionary/hone-maven-plugin#1032 · Opened Sep 19, 2026
`Witnessed.joined` replaces over-cap census with `Unknown`, causing downstream voids Open

bug good-title

objectionary/eo#8844 · 1 assignee · Opened Sep 19, 2026
A --symbolic entry without λ or 𝑛 is reported as key "\955" / "\119899" not found Open

Difficulty 2/5 1-3 hours Newbie friendliness 84/100

objectionary/phino#1333 · Opened Sep 19, 2026
A misspelled key in a rule file (wehn: for when:) is silently ignored, so the guard disappears Open

Difficulty 3/5 1-2 days Newbie friendliness 78/100

objectionary/phino#1332 · Opened Sep 19, 2026
Heaps.write and Heaps.resize report 'can't read' and 'can't get size' for an unallocated block Open

Difficulty 1/5 Under an hour Newbie friendliness 88/100

objectionary/eo#8841 · Opened Sep 19, 2026
--in-place on an XMIR input overwrites the .xmir file with phi text Open

Difficulty 2/5 1-3 hours Newbie friendliness 84/100

objectionary/phino#1331 · Opened Sep 19, 2026
Printer writes bar:@ for an argument with as="φ", which the parser rejects Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

objectionary/eo#8840 · Opened Sep 19, 2026
XMIR round trip drops the atom attribute, so the EO printer writes an atom without its type Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

objectionary/phino#1330 · Opened Sep 19, 2026
eoc docs overwrites the page of a top-level object named packages with the index Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

objectionary/eoc#1351 · Opened Sep 19, 2026
README says random-tau accepts bindings and attributes, but it refuses any argument Open

Difficulty 2/5 1-3 hours Newbie friendliness 88/100

objectionary/phino#1329 · Opened Sep 19, 2026
A rule with an unknown function in 'where' is accepted at load time and fails only when it matches Open

Difficulty 2/5 1-3 hours Newbie friendliness 75/100

objectionary/phino#1328 · Opened Sep 19, 2026
A malformed rule condition fails with 'Error in $.when: empty' instead of its own message Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

objectionary/phino#1327 · Opened Sep 19, 2026
Rule functions sum, concat and dataize reject Φ.bytes, although the README says they accept it Open

Difficulty 3/5 1-2 days Newbie friendliness 76/100

objectionary/phino#1326 · Opened Sep 19, 2026
sed in a rule accepts s/a with no replacement and silently deletes the match Open

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

objectionary/phino#1325 · Opened Sep 19, 2026
--canonize renames the λ ⤍ Package marker, so packages are lost in XMIR and merge Open

Difficulty 3/5 1-2 days Newbie friendliness 78/100

objectionary/phino#1324 · Opened Sep 19, 2026
XMIR listing keeps ]]> unescaped, so the XMIR is not well-formed XML Open

Difficulty 2/5 1-3 hours Newbie friendliness 84/100

objectionary/phino#1323 · Opened Sep 19, 2026
Normalization produces Φ( ρ ↦ … ), which phino cannot parse back Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

objectionary/phino#1322 · Opened Sep 19, 2026
XMIR reader drops the bindings of an argument formation that also holds data Open

Difficulty 3/5 1-2 days Newbie friendliness 78/100

objectionary/phino#1321 · Opened Sep 19, 2026
Applying a formation is written to XMIR with an empty @base and cannot be read back Open

Difficulty 3/5 1-2 days Newbie friendliness 82/100

objectionary/phino#1320 · Opened Sep 19, 2026
XMIR written for a dispatch on the terminator (⊥.t) cannot be read back Open

Difficulty 2/5 1-3 hours Newbie friendliness 85/100

objectionary/phino#1319 · Opened Sep 19, 2026
`directory.listed` reads a closed directory handle a second time because `entries` is never forced Open

Difficulty 1/5 Under an hour Newbie friendliness 90/100

objectionary/eo#8839 · 1 comment · Opened Sep 19, 2026
eoc clean deletes a parent of the home directory while refusing the home directory itself Open

Difficulty 2/5 1-3 hours Newbie friendliness 82/100

objectionary/eoc#1350 · Opened Sep 19, 2026
One morphed term embeds the universe 184 times, so a dead object still costs linear time (resources/normalize/dot.yaml, src/Matcher.hs:175) Open

bug

objectionary/phino#1318 · 5 comments · 1 assignee · Opened Sep 19, 2026
`eoc` doesn't allow persistent default `--parser`/`--home-tag` version leading to failed calls Open

enhancement good-title

Difficulty 3/5 1-2 days Newbie friendliness 65/100

objectionary/eo#8836 · Opened Sep 18, 2026
entry.sh:211-218: Let CI run the two integration projects... Open

Difficulty 2/5 Under an hour Newbie friendliness 72/100

objectionary/hone-maven-plugin#1010 · Opened Sep 18, 2026
`BuildMojo` runs a failing `docker build` three times, however permanent the failure Open

enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

objectionary/hone-maven-plugin#1003 · Opened Sep 18, 2026
The default `short` mode drops the `MethodParameters` attribute, so every round trip loses parameter names Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 72/100

objectionary/jeo-maven-plugin#1745 · Opened Sep 18, 2026
`number.as-scientific` unnecessarily recalculates `mantissa` up to three times per call Open

bug good-title

objectionary/eo#8828 · 2 comments · 1 assignee · Opened Sep 18, 2026
xmirToPhi drops text after a comment inside an o element Open

bug help wanted

Difficulty 2/5 1-3 hours Newbie friendliness 84/100

objectionary/phino#1283 · Opened Sep 17, 2026
replaceExpressionFast loops forever on an empty formation pattern Open

bug help wanted

Difficulty 2/5 1-3 hours Newbie friendliness 88/100

objectionary/phino#1282 · Opened Sep 17, 2026
replaceAll splits UTF-8 characters when the regex matches an empty string Open

bug help wanted

Difficulty 2/5 1-3 hours Newbie friendliness 84/100

objectionary/phino#1277 · Opened Sep 17, 2026
overlapping lambda regex keys silently shadow later entries Open

bug help wanted

Difficulty 4/5 3-5 days Newbie friendliness 52/100

objectionary/phino#1276 · Opened Sep 17, 2026
regexp replacement overflows on an oversized group index Open

bug help wanted

Difficulty 2/5 1-3 hours Newbie friendliness 84/100

objectionary/phino#1275 · Opened Sep 17, 2026
randomString can return duplicate values under concurrent calls Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

objectionary/phino#1274 · Opened Sep 17, 2026
allPathsIn recurses forever through directory symlink cycles Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 68/100

objectionary/phino#1273 · Opened Sep 17, 2026
Dispatched.java puzzle not correctly referring arms through a body Open

bug good-title pdd

objectionary/eo#8823 · 1 assignee · Opened Sep 17, 2026
`Lhs` Javadoc incorrectly refers to §3.10.7 instead of R-3.10.10a for parenthesised inline-phi Open

bug good-title

Difficulty 1/5 Under an hour Newbie friendliness 95/100

objectionary/eo#8820 · Opened Sep 17, 2026
`Emissions.topLevelInlinePhi` is a copy of `Eo.topLevelGreaterBracketIndex` Open

Difficulty 2/5 1-3 hours Newbie friendliness 85/100

objectionary/eo#8819 · 1 comment · Opened Sep 17, 2026
`Lhs.bare` moves the cursor of the `Tokens` it is asked about Open

Difficulty 3/5 1-2 days Newbie friendliness 76/100

objectionary/eo#8818 · 1 comment · Opened Sep 17, 2026
`Lhs` misreads `Q.` head causing incorrect error reporting in only-phi lines Open

bug good-title

Difficulty 2/5 1-3 hours Newbie friendliness 88/100

objectionary/eo#8817 · Opened Sep 17, 2026
`DefectMissing.apply` checks for a null map after dereferencing it Open

Difficulty 1/5 Under an hour Newbie friendliness 92/100

objectionary/lints#1485 · 1 comment · Opened Sep 17, 2026

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