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reinhardt021/IRB practice

Created October 27, 2015 18:08
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IRB practice
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 >
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