rails_girls.rb

puts 'Welcome to RailsGirls Medellin!!!!'
# types
# - String
# - Boolean
# - Integer
# - Float
# - Array
# - Hash

a_string = "Hola"
a_nother_string = 'Hello World'
a_number = 200
a_nother_number = 1_234_567
a_float = 200.0
an_array = []
a_range = (1..10)
a_hash = {} # Dictionary
a_symbol = :simbol
a_nil = nil

PI = 3.1416 # Constant
PI = 1 # warning: already initialized constant PI

text1 = 'Holi'
text2 = 'From Rails'
text3 = 'Girls Medellin'
puts "#{text1} #{text2} #{text3}"

input = gets

puts "Look what you type: #{input}"

an_array.push 100 # => [100]
an_array.push 'string' # => [100, 'string']
an_array.push {} # => [100, 'string', {}]
an_array.push Array.new # => [100, 'string', {}, []]
an_array.push 30.05 # => [100, 'string', {}, [], 30.05]

a_hash['Rails'] = 'Girls' # => {'Rails' => 'Girls'}
a_hash[:Colombia] = 'Medellin' # => {'Rails' => 'Girls', Colombia: 'Medellin'}

10.times do
  puts "This year I will learn Ruby on Rails"
end

5.downto 0 do |x|
  puts "#{x}!"
  puts "Happy New Year!!!!(6 months late)" if x == 0
end

[1,2,3,4,5,6].each do |number|
  puts "#{number}^2 = #{number ** 2}"
end

(1..10).each do |n|
  puts "user with id=(#{n}) ... "
end

# dictionaries
eng_msg = ''
es_msg = ''
{
  beer: 'pola',
  party: 'fiesta',
  after: 'despues',
  workshop: 'taller'
}.each_pair do |english, spanish|
  eng_msg += " #{english}"
  es_msg += " #{spanish}"
end
puts eng_msg
puts es_msg

def weekend?(time)
  time.saturday? || time.sunday?
end

if weekend? Time.now
  puts "Let's Go Party!!!"
else
  puts "workday :("
end

class Person
  attr_accessor :name, :age
  def initialize name, age
    @name = name
    @age = age
  end
  
  def adult?
    @age >= 18
  end
  
  def life_time
    case @age
    when 0 .. 2
        puts "baby"
    when 3 .. 6
        puts "little child"
    when 7 .. 12
        puts "child"
    when 13 .. 18
        puts "youth"
    else
        puts "adult"
    end
  end
end

kid = Person.new 'Yepeto', 15 # => Person.new('Yepeto', 15)
puts 'You can not enter here' unless kid.adult?
# THE SAME IN OTHER WAY
# =====
# unless kid.adult?
#  puts 'You can not enter here'
# end
# =====
# if !kid.adult?
#  puts 'You can not enter here'
# end
# =====
kid.life_time # => youth

this is great @sescobb27! 👍

What do you think about adding some basic constructs so they can compare against the languages they already know:

• if/else/switch conditionals
• math/logic operands +, -, =, ==, *, ^
• methods definition
• methods/arguments passing
• maybe some classes (if they have some OOP background already)

you can grab some of those from Ruby Fundamentals talk code