Lesson 3 solution

module2_lesson3_formative.rb

class Person
  #have a first_name and last_name attribute with public accessors
  #attr_accessor

  attr_accessor :first_name, :last_name

  #have a class attribute called `people` that holds an array of objects
  @@people = []

  #have an `initialize` method to initialize each instance
  def initialize(first_name, last_name)#should take 2 parameters for first_name and last_name
    #assign those parameters to instance variables
    #add the created instance (self) to people class variable
    @first_name = first_name
    @last_name = last_name
    @@people << self
  end

  #have a `search` method to locate all people with a matching `last_name`
  def self.search(last_name)
    @@people.select {|person| person.last_name == last_name}
    #accept a `last_name` parameter
    #search the `people` class attribute for instances with the same `last_name`
    #return a collection of matching instances
  end

  #have a `to_s` method to return a formatted string of the person's name
  def to_s
    "#{first_name} #{last_name}"
    #return a formatted string as `first_name(space)last_name`
  end
end

p1 = Person.new("John", "Smith")
p2 = Person.new("John", "Doe")
p3 = Person.new("Jane", "Smith")
p4 = Person.new("Cool", "Dude")

puts Person.search("Smith")

# Should print out
# => John Smith
# => Jane Smith