Ruby / RoR - 字符串哈希到整数哈希

Question

我有一个Hash @answers = params [：Answers] .to_hash;

<%= debug @answers %>出局

--- 
"1": "2"
"7": "3"
"6": "4"
"4": "0"

需要将@answers设为如下所示

@ans = {1 => 2, 7 => 3, 6 => 4, 4 => 0} <%= debug @answers %>出局

--- 
1: 2
7: 3
6: 4
4: 0

Answer 1

黑魔法向导报道：

answers = {"1" => "2", "3" => "4"}
Hash[*answers.to_a.flatten.map(&:to_i)] # => {1=>2, 3=>4}

Answer 2

这是代码

@ans = {"1" => "2", "7" => "3", "6" => "4", "4" => "0"}
@foo_hash ={} #new_hash
@ans.each_pair{|k,v| @foo_hash.store(k.to_i,v.to_i)}

@foo_hash将为{1 => 2, 7 => 3, 6 => 4, 4 => 0}

然后你可以＆lt;％=调试@foo_hash％＆gt;获取YAML格式的输出