mustmodify

module Enumerable
  def first_result
    self.each do |item|
      out = yield item
      return out if out
    end
  end
end

mustmodify

! Unable to load application: LoadError: no such file to load -- iconv
An exception occurred running /home/jw/.rvm/gems/rbx-2.2.10/bin/ruby_executable_hooks:

    no such file to load -- iconv (LoadError)

Backtrace:

                               Rubinius::CodeLoader#load_error at kernel/common/code_loader.rb:441
                     Rubinius::CodeLoader#resolve_require_path at kernel/common/code_loader.rb:425
                           { } in Rubinius::CodeLoader#require at kernel/common/code_loader.rb:103

mustmodify

class Numeric
 def stuff=(value)
  @stuff=value
 end
end

x = 7
x.stuff='hello'

# EXPLOSION!

mustmodify

class Person
  def say(message)
    puts "Some people would say '#{message}'"
  end

  def hey_do_something_for_me( proc )
    proc.call
  end
end

mustmodify

# config/initializers/warden.rb

Rails.application.config.middleware.use Warden::Manager do |manager|
  manager.default_strategies :password, :perishable_token
  manager.failure_app = lambda { |env| 
  # Just to be clear, I'm not actually sold on failure apps. The intent
  # here is that if an authentication strategy fails and a failure app is
  # defined, then it controls the flow. I now think this should be handled 
  # on the controller level... don't define a failure app, and have your
  # controllers test to see whether there is a current_user. Because sometimes

mustmodify

 expected to find text "Search by patient name" in "[menu] [breadcrumbs] [tabs:] History Import Manual Entry [tab content:] Search by patient name: Enter the name of the patient for whom you are searching. We'll show any matching messages we've received in the last few months. [more content]

mustmodify

    def metaclass
      class << self; self; end
    end

    def has_list( name, attributes={} )
      metaclass.instance_eval do
        define_method( name ) do
          []
        end
      end

mustmodify

<% cache( @presenter.cache_key ) do %>
  <%= cloud.to_svg %>
<% end %>

mustmodify

<% cache( @presenter.cache_key ) do %>
  <%= String.random(10) %>
<% end %>

mustmodify

def gap_weight_for( age )
  difference = (value_of(age) - patient_age).abs
  ( difference * 0.1 ) ** 1.07
end

intermittently results in:

  in `**': #<Class:0x0000000a693110> can't be coerced into BigDecimal (TypeError)

def gap_weight_for( age )