ruby.rb

# lazy
def filter_elements(elements, x, limit)
  elements
      .lazy
      .map {|e| Result.new(e, x)}
      .select {|new_e| new_e.work < 100 }
      .sort_by {|new_e| new_e.work }
      .take(limit)
      .to_a
end

# non lazy
def filter_elements(elements, x, limit)
  elements
      .map {|e| Result.new(e, x)}
      .select {|new_e| new_e.work < 100 }
      .sort_by {|new_e| new_e.work }
      .take(limit)
end