Interactive Ruby (Practice)

irb_pry practice

vagrant [vagrant]> irb
2.3.0 :001 > def say_hi(name)
2.3.0 :002?>   "Hi, #{name}"
2.3.0 :003?>   end
 => :say_hi 
2.3.0 :004 > say_hi("Joanna")
 => "Hi, Joanna" 
2.3.0 :005 > an_array = ['Hello', 'nurse', 'and', 'world']
 => ["Hello", "nurse", "and", "world"] 
2.3.0 :006 > an_array.each {|word| puts word} 
Hello
nurse
and
world
 => ["Hello", "nurse", "and", "world"] 
2.3.0 :007 > Math.sqrt(1282)
 => 35.805027579936315 
2.3.0 :008 > Time.now
 => 2016-06-21 15:58:21 +0000 
2.3.0 :009 > Array.new(10, 'bee')
 => ["bee", "bee", "bee", "bee", "bee", "bee", "bee", "bee", "bee", "bee"] 
2.3.0 :010 > gem list
NameError: undefined local variable or method `list' for main:Object
	from (irb):10
	from /usr/local/rvm/rubies/ruby-2.3.0/bin/irb:11:in `<main>'
2.3.0 :011 > quit
vagrant [vagrant]> gem install pry
Successfully installed pry-0.10.3
1 gem installed
vagrant [vagrant]> pry
[1] pry(main)> include Math                                          
=> Object
[2] pry(main)> sqrt 64                                               
=> 8.0
[3] pry(main)>