将String转换为Array

Question

这是我的字符串：

 "[[question1, answer1],[queston2,ans2]]" 

如何转换为像

这样的数组

[[question1, answer1],[queston2,ans2]]

Answer 1

您可以使用yaml

轻松完成此操作

require 'yaml'

str = "[[question1, answer1],[queston2,ans2]]"

# transform your string in a valid YAML-String
str.gsub!(/(\,)(\S)/, "\\1 \\2")

YAML::load(str)
# => [[question1, answer1],[queston2,ans2]]

或

YAML.load(str)

Answer 2

使用str = "[[question1, answer1],[queston2,ans2]]"，无法获得

之类的输出

[[question1, answer1],[queston2,ans2]]。我们只需[["question1", "answer1"], ["queston2", "ans2"]]和require 'yaml'即可获得YAML.load str等字符串元素的输出。

如果您有标识符question1, answer1, queston2 and ans2，那么您可以使用eval str获取这些标识符的相应值数组。

考虑到： -

question1 = "Which language is the best language?"
answer1 = "Ruby"
queston2 = "Which framework is the best framework?"
ans2 = "Rails 4.1"

我们将获得如下数组： -

eval str
=> [["Which language is the best language?", "Ruby"], 
     ["Which framework is the best framework?", "Rails 4.1"]]