phiggins

require 'objspace'
require 'active_record'
require 'benchmark/ips'

ActiveRecord::Base.establish_connection adapter: "sqlite3",
                                        database: ":memory:"

ActiveRecord::Base.connection.instance_eval do
    create_table(:articles) { |t| t.string :name }
end

phiggins

test_error.rb:3: [BUG] Segmentation fault at 0x00000000000000
ruby 2.1.3p242 (2014-09-19 revision 47630) [x86_64-linux]

-- Control frame information -----------------------------------------------
c:0005 p:---- s:0012 e:000011 CFUNC  :inspect
c:0004 p:---- s:0010 e:000009 CFUNC  :inspect
c:0003 p:---- s:0008 e:000007 CFUNC  :p
c:0002 p:0024 s:0004 E:001dc8 EVAL   test_error.rb:3 [FINISH]
c:0001 p:0000 s:0002 E:001f18 TOP    [FINISH]

phiggins

 > elements = {a1: 'a', b1: 'b', b2: 'b', b3: 'b', c1: 'c'}
 => {:a1=>"a", :b1=>"b", :b2=>"b", :b3=>"b", :c1=>"c"}
 > elements.group_by {|(_, val)| val }.flat_map {|(_, vals)| vals.shuffle }
 => [[:a1, "a"], [:b2, "b"], [:b3, "b"], [:b1, "b"], [:c1, "c"]] 
 > elements.group_by {|(_, val)| val }.flat_map {|(_, vals)| vals.shuffle }
 => [[:a1, "a"], [:b1, "b"], [:b3, "b"], [:b2, "b"], [:c1, "c"]] 
 > elements.group_by {|(_, val)| val }.flat_map {|(_, vals)| vals.shuffle }
 => [[:a1, "a"], [:b1, "b"], [:b3, "b"], [:b2, "b"], [:c1, "c"]] 
 > elements.group_by {|(_, val)| val }.flat_map {|(_, vals)| vals.shuffle }
 => [[:a1, "a"], [:b2, "b"], [:b1, "b"], [:b3, "b"], [:c1, "c"]] 

phiggins

for i in app/models/*.rb ; do sed "s/\s\+def \(self\.\)\?\([^( ]*\).*\|\s\+scope :\([^,]*\).*/\2\3/;tx;d;:x" $i | while read j ; do echo $(grep -R $j app/ lib/ config/ | wc -l) $j ; done ; done | sort -rn

phiggins

 > class Taco
 >   def self.delicious? ; true ; end
 >   singleton_class.send :alias_method, :yummy?, :delicious?
 >   end
 => #<Class:Taco> 
 > Taco.yummy?
 => true 

phiggins

pete@balloon:~/projects/nand2tetris/phiggins/01$ pwd
/home/pete/projects/nand2tetris/phiggins/01
pete@balloon:~/projects/nand2tetris/phiggins/01$ ../../tools/HardwareSimulator.sh ~/projects/nand2tetris/phiggins/01/Mux4Way16.tst 
End of script - Comparison ended successfully
pete@balloon:~/projects/nand2tetris/phiggins/01$ 

phiggins

require 'spec_helper'

describe User do
  it "should blow up" do
    expect(User).to receive(:create!).and_raise(ActiveRecord::RecordNotUnique)
  end
end

=begin
Fails with:

phiggins

     Failure/Error: expect(View).to receive(:create!).and_raise(ActiveRecord::RecordNotUnique)
     ArgumentError:
       wrong number of arguments (0 for 2)

phiggins

module Kernel
  def method_a
    :foo
  end
end

def method_b
  :bar
end

phiggins

module Kernel
  def required(arg=nil)
    method = caller_locations(1,1)[0].label
    raise ArgumentError.new("required parameter #{arg.to_sym.inspect + ' ' if arg}not passed to method #{method}")
  end
end