奇数列表上的哈希非常基本的脚本

Question

这是我的代码（全部）：

require "rubygems"
require "ruby-box"

安装了rubygems，并将rubybox作为gem安装。这是我的错误：

Faraday: you may want to install system_timer for reliable timeouts
/Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:45:in `gem_original_require': /Library/Ruby/Gems/1.8/gems/ruby-box-1.9.1/lib/ruby-box/item.rb:91: odd number list for Hash (SyntaxError)
        access: 'open'
               ^
/Library/Ruby/Gems/1.8/gems/ruby-box-1.9.1/lib/ruby-box/item.rb:91: syntax error, unexpected ':', expecting '}'
        access: 'open'
               ^
/Library/Ruby/Gems/1.8/gems/ruby-box-1.9.1/lib/ruby-box/item.rb:92: syntax error, unexpected '}', expecting kEND
      }.merge(opts) if opts
       ^
/Library/Ruby/Gems/1.8/gems/ruby-box-1.9.1/lib/ruby-box/item.rb:102: odd number list for Hash
        shared_link: opts
                    ^
/Library/Ruby/Gems/1.8/gems/ruby-box-1.9.1/lib/ruby-box/item.rb:102: syntax error, unexpected ':', expecting '}'
        shared_link: opts
                    ^
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:45:in `require'
    from /Library/Ruby/Gems/1.8/gems/ruby-box-1.9.1/lib/ruby-box.rb:4
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:110:in `gem_original_require'
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:110:in `require'
    from box.rb:2

Answer 1

看起来您使用的是Ruby 1.8，但试图使用Ruby 1.9中添加的哈希文字语法：

{ foo: bar }

在Ruby 1.8中，您需要编写：

{ :foo => bar }

但如果您刚刚开始，我建议您简单地升级Ruby版本，而不是重写代码。

请注意，如果hash是方法调用的参数，则有时会省略大括号。