Bootcamp

Day4.md

Hash

me = {"Me" => "Tony"} key => Value (pairs)

me["Me"] me.fetch("Me","unkown") <---- second arguement is the default value to return

my_hash = Hash.new my_hash = Hash.new(0) my_hash = {}

my_hash.each do |key,value|
 puts "key is #{key} and values is #{value}"
 end

Symbol

:im_a_symbol

immutable