fernandes

# Chapter 2: Designing Classes with Single Responsability
Single Responsability
* Ask Each Method: 'Class whats your :method?'
* Hide Instance Variables
* Hide Data Structures
* Extract Extra Responsability From Methods

Dependencies
* Must known no Constant
* Must _not_ call methods on other objects (constants)

fernandes

(╯°□°）╯︵ ┻━┻

¯\_(ツ)_/¯

oslǝɔ
oslǝƆ
osןǝɔ

fernandes

# This class is an org
class Organization < ActiveRecord::Base
  # @!attribute name
  #   @return [String] The name of the task.

  # @!attribute description
  #   @return [String] The description of the task.

  # @!attribute active
  #   @return [Boolean] Marks whether the task is active or not.

fernandes

# Operating System: OSX 10.10.3
# Boxen + Brew

brew install libxml2 libxslt

gem install nokogiri -- \
    --use-system-libraries \
    --with-xml2-lib=/opt/boxen/homebrew/opt/libxml2/lib \
    --with-xml2-include=/opt/boxen/homebrew/opt/libxml2/include/libxml2 \
    --with-xslt-lib=/opt/boxen/homebrew/opt/libxslt/lib \

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# If for any reason you need to reproduce the Rails Guides ActiveRecord examples
# this gist will make your life easier

#############################
### Has Many / Belongs To ###
#############################

# be rails g model Order order_date:datetime customer:references
class Order < ActiveRecord::Base
  belongs_to :customer

fernandes

Keybase proof

I hereby claim:

• I am fernandes on github.
• I am celsovjf (https://keybase.io/celsovjf) on keybase.
• I have a public key whose fingerprint is 9D00 08CD 3979 93B2 42CD E0F8 40DF 674A CECC B224

To claim this, I am signing this object:

fernandes

Component-Based Rails Applications (#cobra)

What is it?

Cobra is a way to organize your rails application, imagine it like a new way for packaging your rails apps

These are my annotations based on work of @shageman and @benjaminleesmith from Pivotal

Baby steps

fernandes

## Vim

### Basic
enable line numbers                           :set number | :set nu
disable line numbers                          :set nonumber | :set nonu | :set nu!
enable relative numbers                       :set relativenumber
convert entire word to uppercace              <leader>u
convert entire word to lowercase              <leader>l
convert first char of word to uppercase       <leader>U
convert first char of word to lowercase       <leader>L

fernandes

# Cheat Sheet

## TMUX
starts new session             tmux new -s <name>
attach deatached session       tmux (a)ttach -t <name>
list sessions                  tmux ls

### Windows
new window                     ^a c
list windows                   ^a w

fernandes

#!/bin/bash

while read pid; do
	ls -l /proc/${pid}/exe|awk -F" " '{print $11}'
done < <(lsof|egrep libssl|awk -F" " '{print $2'})|sort -d|uniq