class RuboCop::Cop::Performance::TimesMap

end
i.to_s
Array.new(9) do |i|
# good
end
i.to_s
9.times.map do |i|
# bad
@example
with an explicit array creation.
In most cases such calls can be replaced
This cop checks for .times.map calls.

def autocorrect(node) 

def autocorrect(node)
  map_or_collect, count = times_map_call(node)
  replacement =
    "Array.new(#{count.source}" \
    "#{map_or_collect.arguments.map { |arg| ", #{arg.source}" }.join})"
  lambda do |corrector|
    corrector.replace(map_or_collect.loc.expression, replacement)
  end
end

def check(node) 

def check(node)
  times_map_call(node) do |map_or_collect, count|
    add_offense(node, message: message(map_or_collect, count))
  end
end

def message(map_or_collect, count) 

def message(map_or_collect, count)
  template = if count.literal?
               MESSAGE + '.'
             else
               "#{MESSAGE} #{MESSAGE_ONLY_IF}."
             end
  format(template,
         count: count.source,
         map_or_collect: map_or_collect.method_name)
end

def on_block(node) 

def on_block(node)
  check(node)
end

def on_send(node) 

def on_send(node)
  check(node)
end