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@moyix
moyix / killbutmakeitlooklikeanaccident.sh
Created February 5, 2022 22:51
Script to inject an exit(0) syscall into a running process. NB: only x86_64 for now!
#!/bin/bash
gdb -p "$1" -batch -ex 'set {short}$rip = 0x050f' -ex 'set $rax=231' -ex 'set $rdi=0' -ex 'cont'
@ggerganov
ggerganov / iss-docking.js
Created May 16, 2020 12:30
Automatic ISS Docking in Javascript
// Auto-pilot for docking with the International Space Station
//
// The program uses Artificial Intelligence and Decision Trees (i.e. basic kinematics and a bunch of if statements)
// to perform docking with the ISS from any starting position.
//
// To use it:
// - open the SpaceX simulation website: https://iss-sim.spacex.com/
// - open the Developer's console and paste the contents of this file
//
// Demo: https://youtu.be/jWQQH2_UGLw
@cscalfani
cscalfani / ThinkAboutMonads.md
Last active December 4, 2022 20:58
How to think about monads

How to think about Monads

UPDATE 2021: I wrote this long before I wrote my book Functional Programming Made Easier: A Step-by-step Guide. For a much more in depth discussion on Monads see Chapter 18.

Initially, Monads are the biggest, scariest thing about Functional Programming and especially Haskell. I've used monads for quite some time now, but I didn't have a very good model for what they really are. I read Philip Wadler's paper Monads for functional programming and I still didnt quite see the pattern.

It wasn't until I read the blog post You Could Have Invented Monads! (And Maybe You Already Have.) that I started to see things more clearly.

This is a distillation of those works and most likely an oversimplification in an attempt to make things easier to understand. Nuance can come later. What we need when first le

@rxaviers
rxaviers / gist:7360908
Last active June 13, 2024 20:05
Complete list of github markdown emoji markup

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@MohamedAlaa
MohamedAlaa / tmux-cheatsheet.markdown
Last active June 13, 2024 05:29
tmux shortcuts & cheatsheet

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname
@jboner
jboner / latency.txt
Last active June 12, 2024 14:31
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD