hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

willurd

This is a small collection of scripts showing how to use require.js. It's only one of several ways of setting up a require.js project, but it's enough to get started.

At its core, require.js is about three things:

1. Dependency management
2. Modularity
3. Dynamic script loading

The following files show how these are achieved.

bensheldon

• Who's your customer? The department or the citizen. What’s your product? The negotiated-design process or the actual outcome itself. These things are interrelated, but ensure the entire team is aligned and in agreement on what it is you’re doing and what the outcome is you want. What do you want to say you built at the end-of-year summit? The earlier you can figure this out, the better your year will go. Project uncertainty is the mind-killer.

• Don't negotiate with yourselves. My team would have achieved so much more if we had come to an agreement internally on how to proceed in our city design negotiations, and let CfA staff tell us if we were unreasonable. Instead, we watered down what we wanted, caved on major issues, and negotiated individually with our city partners rather than as a team.

• Invest your time in one thing for the entire year. Your understanding of the civic problem-space may change and evolve, but creating a commitment (individually, as a team, and in your city-

manigandham

Strictly Frameworks

• Mobiledoc - github.com/bustle/mobiledoc-kit - framework to build editors with a standardized JSON structure
• ShareDB - github.com/share/sharedb - framework to sync any JSON document using operational transforms, add real-time collaborative editing to anything else
• Bangle.dev - github.com/bangle-io/bangle.dev - toolkit built for building editors, based on prosemirror

Abstracted Editors

These use separate document structures instead of HTML, some are more modular libraries than full editors

yossorion

What I Wish I'd Known About Equity Before Joining A Unicorn

Disclaimer: This piece is written anonymously. The names of a few particular companies are mentioned, but as common examples only.

This is a short write-up on things that I wish I'd known and considered before joining a private company (aka startup, aka unicorn in some cases). I'm not trying to make the case that you should never join a private company, but the power imbalance between founder and employee is extreme, and that potential candidates would

monfresh

For best results, all forms mentioned below must be printed out, filled out and signed in ink, and mailed directly to OPM at the following address:

U.S. Office of Personnel Management
Attn: Federal Employee Retirement System 
Post Office Box 45
Boyers, PA 16017-0045

In order to send directly to OPM, you must wait 30 days after your last day at GSA. However, because part of the process requires you to mail some forms to your financial institution and wait for them to send them back, you can start the process about 15 days after your last day.

anshoomehra

fideloper

# Used on Ubuntu 18.04 and 20.04
# Find instructions for other OSes here: https://certbot.eff.org/instructions

# Install Certbot via Snaps
sudo snap install core; sudo snap refresh core
sudo snap install --classic certbot
sudo ln -s /snap/bin/certbot /usr/bin/certbot

# Install DNS CloudFlare plugin
sudo snap set certbot trust-plugin-with-root=ok