naoyamakino

Code Triage: gemhttp://www.codetriage.com/
budle open gemName

puts caller.inspect #where it came from

object#method
object.method(:method_name).source_location
method.source_location

self.class.ancestors #get superclass names in order

naoyamakino

How Shopify Scales Rails John Duff

The Stack:

• ruby1.9.3-p327
• rails3.2
• unicorn 4.5
• percona Mysql5.5
• memcache14.14
• redis2.6

33 app servers, 1172 unicorn workers, 5 job servers, 370 job workers

naoyamakino

pragma solidity ^0.4.18;

contract Addition {
    uint sum;

   function Addition() payable public {

   }

   function () payable public {

naoyamakino

# How design sprints are done at Google

A quick recap of today's meetup at Airbnb by Google about how they conduct design sprints.

https://www.meetup.com/ProductTank-SF/events/238968626/
![](https://pbs.twimg.com/media/C_bzwR7VwAEZ56j.jpg)


Reminder: pretty much all of contents are available at
http://www.gv.com/sprint/

naoyamakino

/**
* Sample React Native App
* https://github.com/facebook/react-native
* @flow
*/

import React, {
	Component,
} from 'react';
import {

naoyamakino

function Square(props) {
  return (
    <button className="square" onClick={() => props.onClick()}>
      {props.value}
    </button>
  );
}


class Board extends React.Component {

naoyamakino

# Uber Mobile Meetup


This is a very rough note from Uber Engineering meetup tonight about building and releasing mobile applications.
https://www.uber.com/p/uber-mobility/


## Uber release release team
- nightly build/beta testing
- internal/external

naoyamakino

1. never use a metaphor, simile, or other figure of speech which you are used to seeing in print.
2. never use a long word where a short one will do
3. if it's possible to cut a word out, always cut it out.
4. never use the passive where you can use the active
5. never use a foreign phrase, a scientific word, or a jargon word if you can think of an everday English equivalent
6. break any of these rules sooner than say anything outright barbarrous

#Five guiding principles

1. minimalism
2. get out of the way

naoyamakino

Diametric gem https://github.com/relevance/diametric
- ActiveModel wrapper of Datomic. MRI via REST service. Jruby via REST service

Datomic is via Rich Hickey, newSql database.
ACID (atomicity, consistency, Isolation, Durability) guranteed.
- has idea of simplicity
- datomics schema, - Array of Hash
- data: array of hash
- query - array in array
- data is immutable

naoyamakino

Building Extractable Libraries in Rails

Avoiding the autoload trap

• rails 3: removing /lib from automatically being loaded on application boot

create a namespace and setup a proper layout when we need to extract our code outside the application into a gem

Hide your credentials from your Library

#config/initializers/twitter_wrangler.rb