Skip to content

Instantly share code, notes, and snippets.

View eduncan911's full-sized avatar

Eric Duncan eduncan911

View GitHub Profile
@jboner
jboner / latency.txt
Last active March 19, 2024 07:03
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
@rgl
rgl / python-embedded.md
Last active March 18, 2024 15:33
notes about python embedded in windows

The gist is:

  1. install the normal python from python.org
  2. install everything into a venv
  3. copy the venv into python embed.

A raw example

unzip python-3.8.0-embed-amd64.zip
@varqox
varqox / recording_application_and_microphone.md
Last active March 7, 2024 17:59
How to record multiple applications and microphone into one audio file on Linux using PulseAudio

How to record multiple applications and microphone into one audio file on Linux

Step 0. Terminology

Sinks are for output, sources are for input. To stream source to sink a loopback must be created. More shall you find there.

Step 1. Create output sink that will be recorded

Our output sink will be named recording.

pacmd load-module module-null-sink sink_name=recording sink_properties=device.description=recording
@aras-p
aras-p / preprocessor_fun.h
Last active February 28, 2024 08:38
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,
https://youtu.be/-C-JoyNuQJs?t=39m45s
When I put the reference implementation onto the website I needed to
put a software license on it.
And I looked at all the licenses that were available, and there were a lot
of them. And I decided that the one I liked the best was the MIT License,
which was a notice that you would put on your source and it would say,
"you're allowed to use this for any purpose you want, just leave the
notice in the source and don't sue me."
@jinie
jinie / .vimrc
Created August 15, 2013 18:54
.vimrc
set nocompatible " be iMproved
filetype on "Avoid errors on close
filetype off " required!
set rtp+=~/.vim/bundle/vundle/
call vundle#rc()
" Bundles {{{-
" let Vundle manage Vundle
" required!
@yann2192
yann2192 / hardening_usbarmory.md
Last active November 22, 2023 11:36
Hardening USB Armory

Hardening the USB Armory

As a good crypto nerd, I usually use an entirely encrypted linux FS: / but also /boot using grub LUKS support. It's a good setup but it's not perfect, the BIOS and the bootloader are not protected.

I recently got a USBArmory and I wanted to apply the same (or a better) setup.

I found some useful links but no clear howto. So this is my setup.

@abdullin
abdullin / ddd-in-golang.markdown
Last active October 10, 2023 00:46
DDD in golang

This is my response to an email asking about Domain-Driven Design in golang project.

Thank you for getting in touch. Below you will find my thoughts on how golang works with DDD, changing it. This is merely a perception of how things worked out for us in a single project.

That project has a relatively well-known domain. My colleagues on this project are very knowledgeable, thoughtful and invested in quality design. The story spelled out below is a result of countless hours spent discussing and refining the approach.

Conclusions could be very different, if there was a different project, team or a story-teller.

Short story

@Sebazzz
Sebazzz / Creality-CR-6-Unboxing-guide.md
Last active September 5, 2023 11:30
Creality CR-6 Unboxing & assembly guide

CR-6 post-unboxing checklist

With most of the CR-6 SE issues being due to bad wiring or loose/too tight screws I feel like it is time for a good post-unboxing checklist, to be walked through pre-assembly. Even though I do not have my unit shipped yet, I've seen enough issues and fixes that I can compile this post.

I initially posted this on the independent CR-6 community Facebook group but since not everyone wants to use Facebook (which I totally understand), I will repost it here. I mirrored most of the relevant content of Facebook to imgur.

If you have any feedback or anything that needs to be added, please let me know and I will amend this post!

Note: There are some known issues with this printer - please read the entire guide. (It is long, I know, but this is a necessary evil!)

Communities