puts parser
require "option_parser"
the_beatles = [
"John Lennon",
"Paul McCartney",
"George Harrison",
"Ringo Starr",
]
shout = false
option_parser = OptionParser.parse do |parser|
parser.banner = "Welcome to The Beatles App!"
parser.on "-v", "--version", "Show version" do
puts "version 1.0"
exit
end
parser.on "-h", "--help", "Show help" do
puts parser
exit
end
parser.on "-t", "--twist", "Twist and SHOUT" do
shout = true
end
end
members = the_beatles
members = the_beatles.map &.upcase if shout
puts ""
puts "Group members:"
puts "=============="
members.each do |member|
puts member
end