warm_up.md

1) Terminal

Download the github repo and save it on your desktop.

• Navigate to the Desktop: cd ~/Desktop
• Navigate to your project folder: cd ruby-workshop-master
• Open up this folder with atom: atom .
• Navigate to the morning folder: cd morning

2) Running your file

• Make a file: touch my_file.rb
• In Atom, use puts and write a message in your file.
• Run the file in your terminal with ruby my_file.rb
• See your message print out in the console!

3) Working with variables

Open a new tab in terminal with CMD + T

• In this tab, open irb with irb
• Make a variable name = (your name)
• Type name.upcase. What is the return value?
• Type name.reverse.
• Type name.upcase.reverse.
• Type name. What is its value?
• Type name = name.reverse. Now what is the value of name ?
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4) Using methods

Play around with these methods to see how they work. Store values in variables as you go.

test_string = "hello world"
arr = [1, 2, 3, 4, 5]

If you do not know how to use a method, check out the documentation.

Ruby String documentation

• String#upcase
• String#downcase
• String#length
• String#reverse
• String#+
• String#<<
• String#chars
• String#index

Ruby Fixnum documentation

• Fixnum#+
• Fixnum#*
• Fixnum#/
• Fixnum#-
• Fixnum#%

Ruby Array documentation

• Array#length
• Array#first
• Array#last
• Array#max
• Array#min
• Array#push
• Array#pop
• Array#unshift
• Array#shift
• Array#join
• Array#index
• Array#concat