MINE_student.rb

class Student
  attr_accessor :name, :twitter, :linkedin, :facebook, :website
  attr_reader :id

  @@students = []
  
  def initialize
    @@students << self
    @id = @@students.count
  end

  def self.all
    @@students
  end

  def self.reset_all
    @@students.clear
  end

  def self.find_by_name(student_name)
    @@students.select do |person|
      person if person.name == student_name
    end
  end

  def self.find(id)
    @@students[id-1]
  end

  def self.delete(id)
    @@students.delete_at(id-1)
  end
end