named_args.rb

# adds two named arguments passed in, named :first and
# :second respectively
def add(args)
  args[:first] + args[:second]
end

# Call it using 1.8 and below style
puts add(:first => 2, :second => 4) # 6

# Call it using the 1.9 style hash syntax

puts add(first: 2, second: 4) # 6