own-iterator.rb

age = [26, 27, 24]
friends = { mark: 26, christopher: 27, aj: 24 }

def reject(enumerable)
  if enumerable.is_a? Array
    results = []
    enumerable.each do |item|
      results << item unless yield(item)
    end
    puts results.inspect
  end

  if enumerable.is_a? Hash
    results = {}
    enumerable.each do |name, age|
      results[name] = age unless yield(name, age)
    end
    results
  end
end

puts "using reject with array param"
puts reject(age) { |item| item > 26 }

puts "using reject with hash param"
puts reject(friends) { |name, age| age > 26}