method_keyword_arguments.rb

# keyword arguments
# Named keyword allow you to specify the names of the parameters when calling a method. This can make your code more readable and allows you to pass arguments in any order.
# When you define a method with named keyword arguments, you use the syntax `parameter_name: default_value` in the method definition. When calling the method, you can specify the arguments using their names.
# REMEMBER keyword arguments must be put in the last position of the parameter.

def introduce(name:, age:, city:)
  puts "My name is #{name}, I am #{age} years old, and I live in #{city}."
end

introduce(name: "Luthfi", age: 25, city: "Jakarta")
# Output: My name is Luthfi, I am 25 years old, and I live in Jakarta.

# We can add default values to named arguments. If an argument is not provided when calling the method, the default value will be used.

def introduce(name:, age: 23, city: "Unknown")
  puts "My name is #{name}, I am #{age} years old, and I live in #{city}."
end

introduce(name: "Skha", city: "Bogor")
# Output: My name is Skha, I am 23 years old, and I live in Bogor.

# Named arguments can also be used in combination with splat arguments. This allows you to have a flexible number of arguments while still maintaining readability.
def introduce(*hobbies, name:, age:, city:)
  puts "My name is #{name}, I am #{age} years old, and I live in #{city}."
  unless hobbies.empty?
    puts "My hobbies are: #{hobbies.join(', ')}."
  end
end

introduce("Reading", "Traveling", name: "Fikha", age: 30, city: "Surabaya")
# Output:
# My name is Fikha, I am 30 years old, and I live in Surabaya.
# My hobbies are: Reading, Traveling.


# If you want to pass a hash of arguments to a method that accepts named keyword arguments, you can use the double splat operator (**) to expand the hash into individual keyword arguments.
def introduce(name:, age:, city:)
  puts "My name is #{name}, I am #{age} years old, and I live in #{city}."
end

args = { name: "Fikha", age: 30, city: "Surabaya" }
introduce(**args)

# Output: My name is Fikha, I am 30 years old, and I live in Surabaya.