ruby - Ruby - 我可以缩短这个声明并返回数组的 7 行方法吗

Question

似乎这将是一个相当常见的模式 - 声明数组并返回它：

def self.show_day_rows(days, month, year, offset)
  daylines=[]
  1.step(days,7).each do |line_starts_with|
    daylines << CalDay.line_of_day_nums(month, year, line_starts_with, offset)
  end
  daylines
end

有没有办法缩短这个但仍然清晰？

Answer 1

def self.show_day_rows(days, month, year, offset)
  1.step(days,7).map do |line_starts_with|
    CalDay.line_of_day_nums(month, year, line_starts_with, offset)
  end
end

Answer 2

@tihorn 的回答略有不同：

def self.show_day_rows(days, month, year, offset)
  1.step(days,7).inject([]) do |daylines, line_starts_with|
    daylines << CalDay.line_of_day_nums(month, year, line_starts_with, offset)
  end
end