Ruby on rails Ruby titleize正在删除连字符，如何覆盖？

当我使用titleize时，它会删除连字符符号

 q = ["2002-h2","2002-h1", "2000-h1", "2005-h2", "2000-h2", "2005-h1"]

 q.sort_by { |a| a }.collect{|u| u}

 => ["2000-h1", "2000-h2", "2002-h1", "2002-h2", "2005-h1", "2005-h2"]

我想要这种类型的

 q.sort_by { |a| a }.collect{|u| u.titleize}

 => ["2000 H1", "2000 H2", "2002 H1", "2002 H2", "2005 H1", "2005 H2"]

我想要排序q值

---

如何解决这个问题？

它只有一个字母吗？那就把它翻成大写吧

 => ["2000-H1", "2000-H2", "2002-H1", "2002-H2", "2005-H1", "2005-H2"]

---

您可以编写得更短，因为

.sort_by{a | a}

返回的结果与

相同。sort

和

。collect{a | a.upcase}

返回的结果与

.map（&:upcase）

---

为什么使用titleize而不是upcase？

[1] pry(main)> "2000-h1".upcase
=> "2000-H1"

q = ["2002-h2","2002-h1", "2000-h1", "2005-h2", "2000-h2", "2005-h1"]

q.sort.map(&:upcase)

#=> ["2000-H1", "2000-H2", "2002-H1", "2002-H2", "2005-H1", "2005-H2"]