jboner

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

joho

Steps to install and run PostgreSQL 9.2 using Homebrew (Mac OS X)
(if you aren't using version 9.1.5, change line 6 with the correct version)

1. launchctl unload -w ~/Library/LaunchAgents/homebrew.mxcl.postgresql.plist
2. mv /usr/local/var/postgres /usr/local/var/postgres91
3. brew update
4. brew upgrade postgresql
5. initdb /usr/local/var/postgres -E utf8
6. pg_upgrade -b /usr/local/Cellar/postgresql/9.1.5/bin -B /usr/local/Cellar/postgresql/9.2.0/bin -d /usr/local/var/postgres91 -D /usr/local/var/postgres
7. cp /usr/local/Cellar/postgresql/9.2.0/homebrew.mxcl.postgresql.plist ~/Library/LaunchAgents/

hofmannsven

Git

Global Settings

• Related Setup: https://gist.github.com/hofmannsven/6814278
• Related Pro Tips: https://ochronus.com/git-tips-from-the-trenches/
• Interactive Beginners Tutorial: http://try.github.io/
• Git Cheatsheet by GitHub: https://services.github.com/on-demand/downloads/github-git-cheat-sheet/

Reminder

Press minus + shift + s and return to chop/fold long lines!

octocat

# Compiled source #
###################
*.com
*.class
*.dll
*.exe
*.o
*.so

# Packages #

nickloewen

This is a plain-text version of Bret Victor’s reading list. It was requested by hf on Hacker News.

---

Highly recommended things!

This is my five-star list. These are my favorite things in all the world.

A few of these works have had an extraordinary effect on my life or way of thinking. They get a sixth star. ★

Zearin

NOTE: This is a question I found on StackOverflow which I’ve archived here, because the answer is so effing phenomenal.

---

Q: How can I make a chain of function decorators in Python?

---

If you are not into long explanations, see [Paolo Bergantino’s answer][2].

Restuta

Hacky way (let me know if you know better one)

Let's say you have repo Main and repo Proto, you want to put your Proto under Main, so folder structure will be the following:

|-SRC
   |---proto

and you also want to preserve commit history, so everybody can see what you were doing while developing proto, sounds like pretty easy task. The easiest way is to create folder structure similar to Main repo SRC\proto and start working using is as a root, but if you like me, you didn't think about this beforehand, so you path would be harder:

rajarsheem

import os, filecmp

codes = {200:'success',404:'file not found',400:'error',408:'timeout'}

def compile(file,lang):
    if lang == 'java':
        class_file = file[:-4]+"class"
    elif lang == 'c':
        class_file = file[:-2]
    elif lang=='cpp':

surganov

Essential Bret Victor

The designer and programmer who main goal is to inspire other creators.

• Официальный сайт
• Шоурил
• CV

The best

junian

# This code is based on tutorial by slicktechies modified as needed to use oauth token from Twitch.
# You can read more details at: https://www.junian.net/2017/01/how-to-record-twitch-streams.html
# original code is from https://slicktechies.com/how-to-watchrecord-twitch-streams-using-livestreamer/

import requests
import os
import time
import json
import sys
import subprocess