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@jboner
jboner / latency.txt
Last active May 18, 2026 11:58
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
@willurd
willurd / web-servers.md
Last active May 16, 2026 19:21
Big list of http static server one-liners

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000
@brandonb927
brandonb927 / osx-for-hackers.sh
Last active May 15, 2026 06:40
OSX for Hackers: Yosemite/El Capitan Edition. This script tries not to be *too* opinionated and any major changes to your system require a prompt. You've been warned.
#!/bin/sh
###
# SOME COMMANDS WILL NOT WORK ON macOS (Sierra or newer)
# For Sierra or newer, see https://github.com/mathiasbynens/dotfiles/blob/master/.macos
###
# Alot of these configs have been taken from the various places
# on the web, most from here
# https://github.com/mathiasbynens/dotfiles/blob/5b3c8418ed42d93af2e647dc9d122f25cc034871/.osx
@trashhalo
trashhalo / SKILL.md
Created February 23, 2026 16:03
Claude Code build failures skill
description Tools for interacting with GitHub Actions CI/CD workflows
context fork

GitHub Actions Skill

This skill provides tools for working with GitHub Actions workflows, including checking build status, retrieving logs, and analyzing CI failures.

Available Scripts

@IanColdwater
IanColdwater / twittermute.txt
Last active March 8, 2026 00:11
Here are some terms to mute on Twitter to clean your timeline up a bit.
Mute these words in your settings here: https://twitter.com/settings/muted_keywords
ActivityTweet
generic_activity_highlights
generic_activity_momentsbreaking
RankedOrganicTweet
suggest_activity
suggest_activity_feed
suggest_activity_highlights
suggest_activity_tweet
@imjasonh
imjasonh / markdown.css
Last active September 3, 2025 22:12
Render Markdown as unrendered Markdown (see http://jsbin.com/huwosomawo)
* {
font-size: 12pt;
font-family: monospace;
font-weight: normal;
font-style: normal;
text-decoration: none;
color: black;
cursor: default;
}
@jorinvo
jorinvo / challenge.md
Last active November 19, 2024 02:40
This is a little challenge to find out which tools programmers use to get their everyday tasks done quickly.

You got your hands on some data that was leaked from a social network and you want to help the poor people.

Luckily you know a government service to automatically block a list of credit cards.

The service is a little old school though and you have to upload a CSV file in the exact format. The upload fails if the CSV file contains invalid data.

The CSV files should have two columns, Name and Credit Card. Also, it must be named after the following pattern:

YYYYMMDD.csv.

@darius
darius / RABBIT.scm
Last active September 23, 2024 19:44
;;- -*-scheme-*-
;;; rabbit compiler
;;- This is the source code to the RABBIT Scheme compiler, by Guy Steele,
;;- taken from the Indiana Scheme repository and annotated by me, Darius
;;- Bacon. I converted it from all-uppercase to all-lowercase and
;;- reindented it with Emacs for better readability. I've added the
;;- comments starting with either ;- or ;*. Other comments are by Steele.
;;- The ;- comments were things I'd figured out, while ;* denoted things
;;- for me to look into. (Sometimes I didn't bother to type in the answer
@silentbicycle
silentbicycle / handwarmer.c
Created January 2, 2014 17:53
handwarmer.c
/*
* Copyright (c) 2014 Scott Vokes <vokes.s@gmail.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR