philandstuff

Codemesh 2014, London

keynote: complexity is outside the code

• @jessitron and @tastapod
• slides

when I started programming:

• architecture was always:
  • box - box - cylinder
• then layers:
  • ideally:

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

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bitemyapp

The Learning Haskell guide has been moved to a git repo to enable outside contribution

Find it here: https://github.com/bitemyapp/learnhaskell

steveklabnik

set nocompatible      " We're running Vim, not Vi!

set guifont=Bitstream\ Vera\ Sans\ Mono:h24

let g:molokai_original = 1
colorscheme molokai

syntax on             " Enable syntax highlighting
filetype on           " Enable filetype detection
filetype indent on    " Enable filetype-specific indenting

JakeWharton

package com.squareup.example;

public abstract BaseActivity extends SherlockActivity {
  private final ScopedBus scopedBus = new ScopedBus();

  protected ScopedBus getBus() {
    return scopedBus;
  }

  @Override public void onPause() {

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

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