从字符串运行ruby代码

Question

有没有办法从字符串内部运行ruby代码。

像

这样的东西

'x = %ruby command%'

我已经从我的GemFile里面试了这个，没有运气

gem 'private_gem', '>= 2.0.0', :git => 'https://#{ENV['github_user']}:#{ENV['github_password']}@github.umn.edu:asrweb/umn_shib_auth.git'

这是错误消息

[!] There was an error parsing `Gemfile`: syntax error, unexpected tIDENTIFIER, expecting end-of-input - ... => 'https://#{ENV['github_user']}:#{ENV['github_password']}...
...                               ^. Bundler cannot continue.

Answer 1

只需使用双引号：

gem 'private_gem', '>= 2.0.0', :git => "https://#{ENV['github_user']}:#{ENV['github_password']}@github.umn.edu:asrweb/umn_shib_auth.git"