module Enumerable

def compact_map(&block) 

def compact_map(&block)
  ary = []
  each do |e|
    v = block.call(e)
    ary << v unless v.nil?
  end
  ary
end

def find_map(&block)

calls the block with successive elements; returns the first truthy object returned by the block 
def find_map(&block)
  each do |element|
    mapped_value = block.call(element)
    return mapped_value if mapped_value
  end
  nil
end