pesterhazy

So you want to write a sync system for a web app with offline and realtime support? Good luck. You might find the following resources useful.

Overview articles

• Database in a browser, a spec (Stepan Parunashvili)

  What problem are we trying to solve with a sync system?

• The web of tomorrow (Nikita Prokopov)

32teeth

Some Title

Some Description Some text

Click Me To Expand

#!/bin/zsh

nadavrot

High-Performance Matrix Multiplication

This is a short post that explains how to write a high-performance matrix multiplication program on modern processors. In this tutorial I will use a single core of the Skylake-client CPU with AVX2, but the principles in this post also apply to other processors with different instruction sets (such as AVX512).

Intro

Matrix multiplication is a mathematical operation that defines the product of

surma

Minimal example making webpack and wasm/Emscripten work together.

Build instructions:

• Clone this gist
• npm install
• npm start
• Open http://localhost:8080
• Look at console

rbishop

Generate a new Elixir project using mix and add cowboy and plug as dependencies in mix.exs:

  defp deps do
    [
      {:cowboy, "~> 1.0.0"},
      {:plug, "~> 0.8.1"}
    ]
  end

jeffrafter

def fetch_contents(queue = "default", max = 100000)
  Sidekiq.redis do |r|
    r.lrange("queue:#{queue}", 0, max)
  end;
end

def sidekiq_job_breakdown(queue = "default", contents = nil)
  re = /\"class":"([0-9A-Za-z_::]+)"/

  contents ||= fetch_contents(queue)

joshuaswilcox

if application "Spotify" is running and application "iTunes" is not running then
  tell application "Spotify"
    if player state is stopped then
      set display to "No Track Playing"
    else
      set track_artist to artist of current track
      set track_name to name of current track
      set track_duration to duration of current track
      set seconds_played to player position
			set state to ""

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

demonbane

#!/bin/sh

echo "What should the Application be called (no spaces allowed e.g. GCal)?"
read inputline
name="$inputline"

echo "What is the url (e.g. https://www.google.com/calendar/render)?"
read inputline
url="$inputline"

mikeymckay

#!/usr/bin/env ruby

require 'rubygems'
require 'sinatra'
require 'friendly'

Friendly.configure({
  :adapter => "sqlite",
  :database => "database.sqlite3"
})