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class AbstractSingleton < Module
  def self.base_class
    self < AbstractSingleton ? superclass : self
  end

  module SingletonInstanceMethods
    ::Singleton.instance_methods.each do |name|
      define_method(name, ::Singleton.instance_method(name))
    end
  end

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require "erb"

module PostgreSQLTriggers
  def create_trigger(name, **options, &block)
    builder = TriggerBuilder.new(name, **options &block)
    builder.each_trigger do |trigger|
      reversible do |dir|
        dir.up do
          say "Create trigger #{trigger.name} on #{trigger.table}"
          trigger.up(self)

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on run {input, parameters}
	tell application "iTunes"
		set theTrack to get current track
		if theTrack's disliked then
			set disliked of theTrack to false
			display notification "Now is not disliked" with title ¬
				"iTunes" subtitle theTrack's artist & " - " & theTrack's name ¬
				sound name "Tink"
		else
			next track

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on run {input, parameters}
	tell application "iTunes"
		set theTrack to get current track
		if theTrack's loved then
			set loved of theTrack to false
			display notification "Now is not loved" with title ¬
				"iTunes" subtitle theTrack's artist & " - " & theTrack's name ¬
				sound name "Tink"
		else
			set loved of theTrack to true

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# This module can be used to easy make callable object or class
# to be used as a block argument with the <tt>&</tt> operator. It just
# implements the +to_proc+ method.
#
# == Examples:
#
#     class Foo
#       extend Yieldable
#
#       def self.call(key, value)

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Read this first!

Hi there! Since this post was originally written, nvm has gained some new tools, and some people have suggested alternative (and potentially better) approaches for modern systems. Make sure to have a look at the comments to this article, before following this guide!

---

The original article

Trickier than it seems.

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Getting Your APNs Certificate

These instructions come from another great gem, apn_on_rails.

Once you have the certificate from Apple for your application, export your key and the apple certificate as p12 files. Here is a quick walkthrough on how to do this:

1. Click the disclosure arrow next to your certificate in Keychain Access and select the certificate and the key.
2. Right click and choose Export 2 items….
3. Choose the p12 format from the drop down and name it cert.p12.

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# frozen_string_literal: true

class Joint < String
  _patterns  =  [[/LATERAL$/, 'ON true'], [/^(?:NATURAL|CROSS)/, '']].deep_freeze!
  _exception = "expected one non-blank argument of `on' or `using' unless type matches one of: #{_patterns.map(&:first).inspect}"
  FALLBACK_BOOL_EXP = -> (type) do
    case type
    when _patterns[0][0]; _patterns[0][1]
    when _patterns[1][0]; _patterns[1][1]
    else raise ArgumentError, _exception

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-- +--------+-------+-------+
-- | init   | mod   | exp   |
-- |--------+-------+-------|
-- | 6      | -1    | 5     |
-- | 5      | 0     | 4     |
-- | 4      | 1     | 6     |
-- | 3      | 0     | 3     |
-- | 2      | -1    | 1     |
-- | 1      | 0     | 2     |
-- +--------+-------+-------+

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# frozen_string_literal: true

class Shrine
  protected :_store, :_delete

  module Plugins
    # Separate storages per versions
    #
    # Usage:
    #