Ruby中的符号替换

Question

我有一个由其他人生成的地图,其数据结构如下:

x = {"city": "London", "country": "England", "region": "Europe"}

我想在Ruby中操纵数据.因此,为了能够让Ruby了解它是一张地图,我需要将所有内容替换":"为"=>".有没有一种快速的方法可以在一行中实现这一目标？

Answer 1

你需要安装这个宝石json

sudo gem install json

    require 'json'
    JSON.parse('{"city": "London", "country": "England", "region": "Europe"}')

Answer 2

my_text = 'x = {"city": "London", "country": "England", "region": "Europe"}'

# Replace : with =>
ruby_code = t.gsub(':', '=>')

# Evaluate the string as ruby code
eval ruby_code

# Now you can access the hash

x['city'] # => "London"