stevensona

# Keep delayed job workers running using systemd on ubuntu
# Usage
# Start "sudo systemctl start delayed_job@{0..3}" to start 4 worker instances
# Enable "sudo systemctl enable delayed_job@{0..3}" to enable 4 worker instances
# Restart "sudo systemctl restart delayed_job@{0..3}" to restart 4 worker instances
# Disable "sudo systemctl disable delayed_job@{0..3}" to disable 4 worker instances
# Stop "sudo systemctl stop delayed_job@{0..3}" to stop 4 worker instances

[Unit]
Description=Delayed Job Worker %i

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

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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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mperham

class TaxCode
  GENERATORS = {
    :us => lambda { |id| "US-#{id}" },
    :br => lambda { |id| "#{id + 9}-BRA" },
  }

  def self.generate(code, id)
    gen = GENERATORS[code] || raise ArgumentError, "No generator for country #{code}"
    gen.call(id)
  end