array_crud.rb

cities = ["london", "paris", "new york", "london"]

# CRUD
# CREATE
cities << "madrid"

# READ
cities[2]

# UPDATE
cities[1] = "san francisco"

# DELETE
cities.delete_at(2)
cities.delete("london")

p cities

array_recap.rb

cities = ["london", "paris", "new york"]
# index    0         1        2
cities[1]  # => "paris"

cities.csv

csv.rb

require 'csv'

CSV.foreach('cities.csv') do |row|
  puts "The city of #{row[0]} has #{row[1]} inhabitants"
end

hash_crud.rb

paris = {
  "country" => "France",
  "population" => 2211000,
}


# CRUD
# CREATE
paris["monument"] = "Eiffel Tower"

# READ
puts paris["population"]

# UPDATE
paris["population"] = 2311000

# DELETE
paris.delete("population")

p paris

hash_iteration.rb

cities = ["paris", "london", "madrid"]

# cities.each do |city|
  # puts city
# end


paris = {
  "country" => "France",
  "population" => 2211000,
}

paris.each do |key, value|
  puts "the #{key} is #{value}"
end

hash_iterator.rb

students = {
  "amy" => 27,
  "bob" => 25,
  "james" => 25
}

count_25 = students.count do |student, age|
  age == 25
end

p count_25

hash_methods.rb

paris = {
  "country" => "France",
  "population" => 2211000,
}

puts paris.has_key?("monument")

p paris.length

hash_name.rb

def full_name(attributes)
  name = "#{attributes[:first].capitalize} #{attributes[:last].capitalize}"
  return name
end

puts full_name(last: 'benoit', first: 'alex')

json.rb

require "json"
require 'open-uri'

puts "what is you gh username?"
user = gets.chomp

result = open("https://api.github.com/users/#{user}").read
user = JSON.parse(result)

puts "your name is: #{user["name"]}"

students.rb

students =     [ "Peter", "Mary", "George", "Emma" ]
student_ages = [ 24     , 25    , 22      ,  20    ]
# index          0        1       2          3

# Peter is 24
# Mary is 25

students.each_with_index do |student, index|
  age = student_ages[index]
  puts "The student #{student} is #{age}"
end

# 4.times do |i|
#   age = student_ages[i]
#   name = students[i]
#   puts "The student #{name} is #{age}"
# end

symbols.rb

paris = {
  "country" => "France",
  "population" => 2211000
}

puts paris["country"]

paris = {
  :country => "France",
  :population => 2211000
}

paris = {
  country: "France",
  population: 2211000
}

puts paris[:country]

tag.rb

def tag(tag_name, content, attributes = {})

  attrs = ""
  attributes.each do |key, value|
    attrs << " #{key}='#{value}'"
  end

  "<#{tag_name}#{attrs}>#{content}</#{tag_name}>"
end

puts tag("h1", "Some Title", id: "main-title", class: "bold")
puts tag("p", "Some Text")

# <h1 class='bold' id='main-title'>Some Title</h1>