pricees

# Integer vs Float div by zero gotchas
#
#
1 / 0 = [answer]
1.0 / 0 = [answer]
1 / 0.0 = [answer]
0 / 0.0 = [answer]

# String concatenation vs interpolation
x = 5

danielvlopes

require 'yaml'
YAML::ENGINE.yamler= 'syck'

faizaanshamsi

Taken and modified from: https://gist.github.com/joakimk/48ed80f1a7adb5f5ea27

* line 4 and 13 of circle.yml reference a script/ci structure. Modify to suit.

dcrec1

cd /tmp
wget http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.2-2.el5.rf.i386.rpm
rpm -Uhv rpmforge-release*.rf.i386.rpm
yum install readline-dev htop

kdabir

for something like this in rails model

...  
validates :points, :numericality => {:greater_than_or_equal_to => 0}, :allow_nil => true
...

test can be :

it { should validate_numericality_of(:points) }

it { should_not allow_value(-1).for(:points) }

luk3thomas

This config wrapper is based on the one I originally saw in https://gist.github.com/bitwalker/a4f73b33aea43951fe19b242d06da7b9.

somebox

Domain-Driven Desire: The Talk from Øredev 2016

🎥 https://vimeo.com/191051851

Links and References

Thanks for watching my talk, Domain-Driven Desire at Øredev 2016. Here's a list of resources that inspired me, and will hopefully inspire you:

Videos

henrik

1. Your class can be no longer than 100 lines of code.
2. Your methods can be no longer than five lines of code.
3. You can pass no more than four parameters and you can’t just make it one big hash.
4. When a call comes into your Rails controller, you can only instantiate one object to do whatever it is that needs to be done. And your view can only know about one instance variable.

You can break these rules if you can talk your pair into agreeing with you.

pmarreck

defmodule YourAppName.Search do

  # ...

  @doc """
  Queries listings.
  """
  def query_listings(query, current_user) do
    default_scope = from l in Listing, where: l.draft == false or l.user_id == ^current_user.id, order_by: [desc: l.updated_at], limit: 50
    id = _try_integer(query)

jswny

Prelude

I. Preface and Motivation

This guide was written because I don't particularly enjoy deploying Phoenix (or Elixir for that matter) applications. It's not easy. Primarily, I don't have a lot of money to spend on a nice, fancy VPS so compiling my Phoenix apps on my VPS often isn't an option. For that, we have Distillery releases. However, that requires me to either have a separate server for staging to use as a build server, or to keep a particular version of Erlang installed on my VPS, neither of which sound like great options to me and they all have the possibilities of version mismatches with ERTS. In addition to all this, theres a whole lot of configuration which needs to be done to setup a Phoenix app for deployment, and it's hard to remember.

For that reason, I wanted to use Docker so that all of my deployments would be automated and reproducable. In addition, Docker would allow me to have reproducable builds for my releases. I could build my releases on any machine that I wanted in a contai