printbf
turing
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printbf
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Few lesser known tricks, quirks and features of C
Somewhat related to this, printf alone in a loop is Turing-complete, by using %-directives like that. It was introduced in “Control-Flow Bending: On the Effectiveness of Control-Flow Integrity” (Carlini, et al. 2015) and the authors have implemented Brainfuck and an obfuscated tic-tac-toe with it.
[0]: https://nebelwelt.net/publications/files/15SEC.pdf
[1]: https://github.com/HexHive/printbf
[2]: https://github.com/carlini/printf-tac-toe
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Controling a Super-Intelligent AI is Impossible, Says Researchers
No shit, you can write a brainfuck interpretter in printf statements: https://github.com/HexHive/printbf
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The International Obfuscated C Code Contest 2020 winners
https://github.com/HexHive/printbf
well this is a brainfuck interpreter inside printf. I’m pretty sure there are plenty of c-to-bf transpilers.
turing
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Show HN: A reference implementation of Schönfinkel's Combinatory Logic paper
Hey all,
A while back I implemented Turing's "On Computable Numbers" paper [1], and decided that Schönfinkel's "On the Building Blocks of Mathematical Logic" would be a fun next one to try to implement.
Alongside the code I include a section-by-section guide to the paper. I apologize for any misreadings of the original text (of which there are probably many).
I'll probably continue to try to make guides/reference implementations for landmark CS papers, would love to hear what you think the most important ones are!
[1] https://github.com/planetlambert/turing
- Show HN: The first complete open source implementation of Turing's famous paper
What are some alternatives?
OWASP-Xenotix-XSS-Exploit-Framework - OWASP Xenotix XSS Exploit Framework is an advanced Cross Site Scripting (XSS) vulnerability detection and exploitation framework.
mathlib4 - The math library of Lean 4
printf-tac-toe - tic-tac-toe in a single call to printf
turbine - A poorly coded configurable Turing machine, made with Rust and splash of ❤️
elvm - EsoLangVM Compiler Infrastructure
automata - A Python library for simulating finite automata, pushdown automata, and Turing machines
xenocryst - A brainfuck interpreter written for memcpy(). Read the paper (or source) for more details.
fundamental - Software to look for interrelationships between constants and find formulas for number sequences
libwheel - Generic data structures for the C programming language with (near) zero overhead.
TuringMachine - A Turing machine interpreter made in Java using Processing libraries.
google-ctf - Google CTF
vim_turing_machine - An implementation of a Turing machine using only normal mode Vim commands