Question

我试图显示最近的日期。我有以下代码：

def closest_birthdate(birthdates)
  sorted_dates = birthdates.sort_by do |_, value|
    (DateTime.parse(value) - DateTime.now).abs
  end
  name, birthday = sorted_dates.first
  "#{name} has his birthday on #{birthday} "
end

hash = {
  'William' =>  '2017-09-05',
  'Henk' =>     '2017-10-12',
  'Richard' =>  '2017-10-10',
}
closest_birthdate(hash)

输出结果为：

"William has his birthday on 2017-10-5"

如何只显示如下的月份和日期？

"William has his birthday on 10-5"

我试图删除散列中的年份，但我认为如果我这样做，代码就不会再识别日期了。

Answer 1

试试这个

require 'date'

"#{name} has his birthday on #{Date.parse(birthday).strftime('%m-%d')}"

从数组/哈希显示月和日

1 个答案: