矩阵.Ruby 1.9.2没有这样的文件

Question

我已经安装了ruby 1.9.2:

alykhan@helium:~$ ruby -v
ruby 1.9.2p0 (2010-08-18 revision 29036) [x86_64-linux]

但是在irb中，当我尝试require 'Matrix'时，我得到如下所示的错误:

alykhan@helium:~$ irb
irb(main):001:0> require 'Matrix'
LoadError: no such file to load -- Matrix
    from <internal:lib/rubygems/custom_require>:29:in `require'
    from <internal:lib/rubygems/custom_require>:29:in `require'
    from (irb):1
    from /usr/local/ruby/bin/irb:12:in `<main>'
irb(main):002:0>

我需要安装一个特定的gem来获得矩阵库吗?

Answer 1

使用小写字母:

require 'matrix'