reinhardt021 · October 27, 2015 18:08 · Oct 27, 2015
diff --git a/IRB practice b/IRB practice
@@ -0,0 +1,177 @@
+Last login: Tue Oct 27 08:43:36 on ttys000
+Reinhardts-MacBook-Air:lighthouse rhcgr$ vim longest.rb
+Reinhardts-MacBook-Air:lighthouse rhcgr$ ruby longest.rb
+longest.rb:6:in `count': wrong number of arguments (0 for 1+) (ArgumentError)
+	from longest.rb:6:in `block in find_longest'
+	from longest.rb:5:in `each'
+	from longest.rb:5:in `find_longest'
+	from longest.rb:13:in `<main>'
+Reinhardts-MacBook-Air:lighthouse rhcgr$ vim longest.rb
+Reinhardts-MacBook-Air:lighthouse rhcgr$ ruby longest.rb
+Reinhardts-MacBook-Air:lighthouse rhcgr$ ruby longest.rb
+Reinhardts-MacBook-Air:lighthouse rhcgr$ vim longest.rb
+Reinhardts-MacBook-Air:lighthouse rhcgr$ ruby longest.rb
+apples
+bananas
+cherries
+durian
+eggplant
+Reinhardts-MacBook-Air:lighthouse rhcgr$ vim longest.rb
+Reinhardts-MacBook-Air:lighthouse rhcgr$ ruby longest.rb
+cherries
+Reinhardts-MacBook-Air:lighthouse rhcgr$ irb
+irb(main):001:0> exit
+Reinhardts-MacBook-Air:lighthouse rhcgr$ vagrant up
+Bringing machine 'default' up with 'virtualbox' provider...
+==> default: Clearing any previously set forwarded ports...
+==> default: Clearing any previously set network interfaces...
+==> default: Preparing network interfaces based on configuration...
+    default: Adapter 1: nat
+==> default: Forwarding ports...
+    default: 3000 => 3000 (adapter 1)
+    default: 3001 => 3001 (adapter 1)
+    default: 22 => 2222 (adapter 1)
+==> default: Booting VM...
+==> default: Waiting for machine to boot. This may take a few minutes...
+    default: SSH address: 127.0.0.1:2222
+    default: SSH username: vagrant
+    default: SSH auth method: private key
+==> default: Machine booted and ready!
+==> default: Checking for guest additions in VM...
+    default: The guest additions on this VM do not match the installed version of
+    default: VirtualBox! In most cases this is fine, but in rare cases it can
+    default: prevent things such as shared folders from working properly. If you see
+    default: shared folder errors, please make sure the guest additions within the
+    default: virtual machine match the version of VirtualBox you have installed on
+    default: your host and reload your VM.
+    default: 
+    default: Guest Additions Version: 4.3.20
+    default: VirtualBox Version: 5.0
+==> default: Mounting shared folders...
+    default: /vagrant => /Users/rhcgr/lighthouse
+==> default: Machine already provisioned. Run `vagrant provision` or use the `--provision`
+==> default: flag to force provisioning. Provisioners marked to run always will still run.
+Reinhardts-MacBook-Air:lighthouse rhcgr$ vagrant ssh
+Welcome to Ubuntu 12.04.4 LTS (GNU/Linux 3.2.0-65-generic-pae i686)
+
+ * Documentation:  https://help.ubuntu.com/
+Welcome to your Vagrant-built virtual machine.
+Last login: Tue Oct 27 00:13:00 2015 from 10.0.2.2
+vagrant [vagrant]> irb
+2.1.3 :001 > puts "hello"
+hello
+ => nil 
+2.1.3 :002 > "Khurram".reverse
+ => "marruhK" 
+2.1.3 :003 > quit
+vagrant [vagrant]> gem install pry
+Fetching: method_source-0.8.2.gem (100%)
+Successfully installed method_source-0.8.2
+Fetching: slop-3.6.0.gem (100%)
+Successfully installed slop-3.6.0
+Fetching: coderay-1.1.0.gem (100%)
+Successfully installed coderay-1.1.0
+Fetching: pry-0.10.3.gem (100%)
+Successfully installed pry-0.10.3
+invalid options: -SNw2
+(invalid options are ignored)
+Parsing documentation for coderay-1.1.0
+Installing ri documentation for coderay-1.1.0
+Parsing documentation for method_source-0.8.2
+Installing ri documentation for method_source-0.8.2
+Parsing documentation for pry-0.10.3
+Installing ri documentation for pry-0.10.3
+Parsing documentation for slop-3.6.0
+Installing ri documentation for slop-3.6.0
+Done installing documentation for coderay, method_source, pry, slop after 6 seconds
+4 gems installed
+vagrant [vagrant]> pry
+[1] pry(main)> puts "hello"
+hello
+=> nil
+[2] pry(main)> "Khurram".reverse
+=> "marruhK"
+[3] pry(main)> quit 
+vagrant [vagrant]> mkdir w1d2/
+vagrant [vagrant]> ls
+git-mania   longest.rb             temp_test_file.txt  vi-vim-cheat-sheet.gif
+index.html  scavenger_hunt-master  Vagrantfile         w1d2
+vagrant [vagrant]> cd w1d2
+vagrant [w1d2]> ls
+vagrant [w1d2]> touch example.rb
+vagrant [w1d2]> ls
+example.rb
+vagrant [w1d2]> open 
+Couldn't get a file descriptor referring to the console
+vagrant [w1d2]> open .
+Couldn't get a file descriptor referring to the console
+vagrant [w1d2]> ruby example.rb
+Enter your name: example.rb:2:in `<main>': undefined local variable or method `gest' for main:Object (NameError)
+vagrant [w1d2]> ruby example.rb
+Enter your name: Reinhardt
+Hello, Reinhardt
+vagrant [w1d2]> pry
+[1] pry(main)> "Khurram".reverse
+=> "marruhK"
+[2] pry(main)> ruby example.rb
+NameError: undefined local variable or method `example' for main:Object
+from (pry):2:in `__pry__'
+[3] pry(main)> quit
+vagrant [w1d2]> pry
+[1] pry(main)> quit
+vagrant [w1d2]> irb
+2.1.3 :001 > def say_hi(name)
+2.1.3 :002?>   "Hi, #{name}"
+2.1.3 :003?>   end
+ => :say_hi 
+2.1.3 :004 > say_hi("Josh")
+ => "Hi, Josh" 
+2.1.3 :005 > my_array = [5,3,7,2]
+ => [5, 3, 7, 2] 
+2.1.3 :006 > my_array.sort
+ => [2, 3, 5, 7] 
+2.1.3 :007 > my_array
+ => [5, 3, 7, 2] 
+2.1.3 :008 > my_array.sort!
+ => [2, 3, 5, 7] 
+2.1.3 :009 > my_array
+ => [2, 3, 5, 7] 
+2.1.3 :010 > my_array.shuffle
+ => [2, 5, 3, 7] 
+2.1.3 :011 > my_array.transpose 
+TypeError: no implicit conversion of Fixnum into Array
+	from (irb):11:in `transpose'
+	from (irb):11
+	from /usr/local/rvm/rubies/ruby-2.1.3/bin/irb:11:in `<main>'
+2.1.3 :012 > my_array.slice  
+ArgumentError: wrong number of arguments (0 for 1..2)
+	from (irb):12:in `slice'
+	from (irb):12
+	from /usr/local/rvm/rubies/ruby-2.1.3/bin/irb:11:in `<main>'
+2.1.3 :013 > my_array.reverse
+ => [7, 5, 3, 2] 
+2.1.3 :014 > my_array         
+ => [2, 3, 5, 7] 
+2.1.3 :015 > my_array.reverse!
+ => [7, 5, 3, 2] 
+2.1.3 :016 > my_array
+ => [7, 5, 3, 2] 
+2.1.3 :017 > an_array = ['Hello', 'nurse', 'and', 'world']
+ => ["Hello", "nurse", "and", "world"] 
+2.1.3 :018 > an_array.each { |word| puts word}
+Hello
+nurse
+and
+world
+ => ["Hello", "nurse", "and", "world"] 
+2.1.3 :019 > Math.sqrt(1282)
+ => 35.805027579936315 
+2.1.3 :020 > Time.now
+ => 2015-10-27 18:01:43 +0000 
+2.1.3 :021 > Array.new(10, 'bee')
+ => ["bee", "bee", "bee", "bee", "bee", "bee", "bee", "bee", "bee", "bee"] 
+2.1.3 :022 > include Math
+ => Object 
+2.1.3 :023 > sqrt 64
+ => 8.0 
+2.1.3 :024 >