Live code de ce matin

morning_code.rb

musicians = ['Jimmy Page', 'Robert Plant', 'John Paul Jones', 'John Bonham']

# puts musicians[0]
# puts musicians.length
musicians << "Jacques Brel"

# for index in 0...(musicians.length)
#   puts "#{index + 1} - #{musicians[index]}"
# end

# for toto in (1..9)
#   puts toto
# end

# i = 1
# musicians.each do |musician|
#   puts "#{i} - #{musician}"
#   i += 1
# end


# musicians.each_with_index do |musician, i|
#   puts "#{i} - #{musician}"
# end

# # ==========

# # transformation
# # musicians_upcased = []
# # musicians.each do |musician|
# #    musicians_upcased << musician.upcase
# # end
# # p musicians_upcased

# #  # map
# #  i = 0
# #  musicians_upcased = musicians.map do |musician|
# #     musician.upcase
# #  end
# #  p musicians_upcased


# count J
# count = 0
# musicians.each do |musician|
#   count = count + 1 if musician.include?("J")
# end
# puts count

# count = musicians.count do |musician|
#   musician.include?("J")
# end
# puts count




# # select
# j_musicians = []
# musicians.each do |musician|
#    j_musicians << musician if musician.include?("J")
# end
# p j_musicians


j_musicians = musicians.select { |musician| musician.include?("J") }
p j_musicians

def timer(message)
  start_time = Time.now
  puts message
  # I do something
  # sleep(3)
  yield("coucou", 2)
  return Time.now - start_time
end

puts (timer("hello") do |message, i|
  puts "in my block !!"
  puts message * i
  sleep(2)
end)