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@marcan
marcan / brainfuck.sh
Created April 22, 2016 01:27
Brainfuck interpreter in POSIX sh
#!/bin/sh
# Brainfuck interpreter implemented in pure POSIX sh builtins only (except I/O)
# Tested in bash and busybox ash (getchar uses a bash-specific read)
# === I/O ===
getchar() {
# bashism
IFS= read -rN 1 a
if [ -z "$a" ]; then
echo $th
@TheWaWaR
TheWaWaR / reloadlib.py
Last active March 10, 2024 01:32
Python reload shared library test script
#!/usr/bin/env python
#coding: utf-8
import os
import sys
import ctypes
def is_loaded(lib):
libp = os.path.abspath(lib)
ret = os.system("lsof -p %d | grep %s > /dev/null" % (os.getpid(), libp))
@CMCDragonkai
CMCDragonkai / haskell_numeric_typeclasses.md
Last active November 19, 2025 01:57
Haskell: Numeric Typeclasses - How numbers work!

Numeric Typeclasses - How numbers work!

Numbers in Haskell are typed of course. They also exist as instances of a numeric typeclass hierarchy. I was confused with converting and working with numbers of different types, and not being sure which functions were polymorphic and could work with different numeric types. So I created a little diagram. Do note that the typeclass hierarchy of Haskell actually does somewhat follow the hierarchy of numbers in Math.

@myusuf3
myusuf3 / delete_git_submodule.md
Created November 3, 2014 17:36
How effectively delete a git submodule.

To remove a submodule you need to:

  • Delete the relevant section from the .gitmodules file.
  • Stage the .gitmodules changes git add .gitmodules
  • Delete the relevant section from .git/config.
  • Run git rm --cached path_to_submodule (no trailing slash).
  • Run rm -rf .git/modules/path_to_submodule (no trailing slash).
  • Commit git commit -m "Removed submodule "
  • Delete the now untracked submodule files rm -rf path_to_submodule
@grugq
grugq / gist:03167bed45e774551155
Last active October 22, 2025 23:01
operational pgp - draft

Operational PGP

This is a guide on how to email securely.

There are many guides on how to install and use PGP to encrypt email. This is not one of them. This is a guide on secure communication using email with PGP encryption. If you are not familiar with PGP, please read another guide first. If you are comfortable using PGP to encrypt and decrypt emails, this guide will raise your security to the next level.

@ax3l
ax3l / CUDA_Compilers.md
Last active December 8, 2025 00:42
CUDA Compilers
@aras-p
aras-p / preprocessor_fun.h
Last active December 5, 2025 05:33
Things to commit just before leaving your job
// Just before switching jobs:
// Add one of these.
// Preferably into the same commit where you do a large merge.
//
// This started as a tweet with a joke of "C++ pro-tip: #define private public",
// and then it quickly escalated into more and more evil suggestions.
// I've tried to capture interesting suggestions here.
//
// Contributors: @r2d2rigo, @joeldevahl, @msinilo, @_Humus_,
// @YuriyODonnell, @rygorous, @cmuratori, @mike_acton, @grumpygiant,
module HList where
open import Level
open import Data.Bool
open import Data.Nat hiding (_⊔_)
open import Data.Vec
open import Data.List
data HList {a} : List (Set a) → Set (Level.suc a) where
[] : HList []
@d0k
d0k / gist:3608547
Last active February 21, 2022 23:34
clang warning flags
-W
-Wextra
-Wmissing-field-initializers
-Wignored-qualifiers
-Winitializer-overrides
-Wsemicolon-before-method-body
-Wmissing-method-return-type
-Wsign-compare
-Wunused-parameter
-W#pragma-messages