genericsteele

class Agent < ActiveRecord::Base
  validates :first_name, :last_name, :email, presence: true
  validates :email, uniqueness: true
  has_many :missions
  scope :on_assignment, -> { Agent.joins(:missions).where(missions: { status: 'active' }) }
  scope :not_on_assignment, -> { where.not(id: Agent.on_assignment.pluck(:id)) }

  def name
    "#{first_name} #{last_name}"
  end

Bouke

Previous versions used homebrew to install the various versions. As suggested in the comments, it's better to use pyenv instead. If you are looking for the previous version of this document, see the revision history.

$ brew update
$ brew install pyenv
$ pyenv install 3.5.0
$ pyenv install 3.4.3
$ pyenv install 3.3.6
$ pyenv install 3.2.6
$ pyenv install 2.7.10

$ pyenv install 2.6.9

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.

---

max-mapper

Interdisciplinary Open Source Community Conferences

Criteria

• Must be an event that someone involved in open source would be interested in attending
• Must be a community oriented event (no corporate owned for-profit events here please)
• Can't be about a specific language/framework.

Leave suggestions in the comments below

tristanm

Migrating a Rails project from MySQL to PostgreSQL

This brief guide is written from my own experience with migrating a large (~5GB) MySQL database to PostgreSQL for a Rails project.

No warranties, guarantees, support etc. Use at your own risk and, as always, ENSURE YOU MAKE BACKUPS FIRST!

I chose [pgloader][1] because it's extremely fast. YMMV.

1. Replace mysql2 gem with pg in Gemfile.
2. Update config/database.yml for PostgreSQL. I used [Rails' template][2] as a starting point.

henrik

defmodule RegexCase do
  defmacro regex_case(string, do: lines) do
    new_lines = Enum.map lines, fn ({:->, context, [[regex], result]}) ->
      condition = quote do: String.match?(unquote(string), unquote(regex))
      {:->, context, [[condition], result]}
    end

    # Base case if nothing matches; "cond" complains otherwise.
    base_case = quote do: (true -> nil)
    new_lines = new_lines ++ base_case

sdieunidou

rabbitmqctl add_user test test
rabbitmqctl set_user_tags test administrator
rabbitmqctl set_permissions -p / test ".*" ".*" ".*"

ivar

There's a couple of ways, one way is

• Get search results
  • Do SPC / and type in your search string
  • or SPC x S and search string - where x is your scope indicator (p for project, d for directory, etc..)
• Once you have the occurences you want, hit C-c C-e inside the helm buffer to put all your match occurences and puts them into a special buffer called the edit buffer or something like that
• in that buffer you can use any commands you'd normally use on a buffer
• the C-c C-c to commit your changes.

dysinger

#!/usr/bin/env stack
> -- stack --resolver lts-6 --install-ghc runghc --package classy-prelude --package lens --package wreq

Blah Blah words about this single file executable README goes here.

> {-# LANGUAGE DeriveAnyClass #-}
> {-# LANGUAGE DeriveGeneric #-}
> {-# LANGUAGE NoImplicitPrelude #-}
> {-# LANGUAGE OverloadedStrings #-}

SunDi3yansyah

# Ignore static version of the site (used to upload error pages to S3 for Heroku errors)
/out