ruby - 如何更改哈希中的顺序？

Question

我有以下哈希：

{"match"=>0, "reach"=>1, "safe"=>2, "undecided"=>3}

我想更改如下顺序：

{"reach"=>1, "match"=>0, "safe"=>2, "undecided"=>3}

对此最有效的解决方案是什么？

标签： rubyhash

Answer 1

{"match"=>0, "reach"=>1, "safe"=>2, "undecided"=>3}
.slice("reach", "match", "safe", "undecided")
# => {"reach"=>1, "match"=>0, "safe"=>2, "undecided"=>3}