Question

 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"]

当我使用标题化删除连字符symols

时

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

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

我想要这种类型

 => ["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？

Answer 1

这只是一个字母吗？然后只是upcase？

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

Answer 2

您可以写得更短，因为.sort_by { |a| a }返回的内容不仅仅是.sort而.collect { |a| a.upcase }返回的内容与.map(&:upcase)相同

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"]

Ruby titleize正在删除连字符，如何覆盖？

2 个答案: