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1. Install XCode

2. Install Command Line Tools from XCode Preferences

3. Install Homebrew

4. Install rvm or rbenv

5. Install Matterhorn dependencies within Homebrew

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[147] pry(main)> ActiveFedora::Base.send( :find_one, 'avalon:692', { cast: true })
=> #<MasterFile:3210659936578975662 @pid="avalon:692" >
[148] pry(main)> ActiveFedora::Base.send( :find_one, 'avalon:692', { cast: true }).class
=> MasterFile

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class RolesController < ApplicationController
  include Hydra::RoleManagement::RolesBehavior

  prepend_before_filter :accept_batches, only: [:destroy]

  def destroy
    @roles.each {|role| role.destroy}
    redirect_to roles_path, notice: "Successfully deleted groups: #{params[:ids].join(", ")}"
  end

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  def active_for_controller controller_name
    params[:controller].to_s == controller_name.to_s ? 'active' : ''
  end

  def active_for_action action_name
    params[:action].to_s == action_name.to_s ? 'active' : ''
  end
  
  Usage:
  

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after_save do |record|
  record.remove_relationship(:is_manager)
  record.add_relationship(:is_manager, "info:fedora/#{record.collection.id}")
end

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var child = parent.open();
$(child.document).find('body').append("Some text");

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require 'uri'

url = 'http://google.com/'


def remove_protocol_from_url( url ) 
  url = url[2..-1] if url.start_with?('//')
  uri = URI(url)
  if scheme = uri.scheme  
    url = url[scheme.length + 3..-1] # :// is 3 bytes

atomical

require 'net/http'
# $ cat http_requests.log | grep "GET /" | wc -l

class BacktraceLogger
  def initialize
  end

  def << ( s )
    open
    @@file.write s

atomical

class TinyTdsWrapper
  def initialize(config)
    @config = config
    @client = nil
  end

  def method_missing(method_name, *args, &block)
    connect!
    begin
      @client.send(method_name, *args, &block)

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#!/usr/bin/env python

# Find the raw bitstring from a captured Flipper RAW .sub file.
# Must provide the bitlength in ms, and the allowable error which can be tolerated.

import re
import sys
import math

filename = sys.argv[1]