小编koj*_*ix2的帖子

我正在尝试为 ruby​​ 创建一个GR 框架绑定。我用小提琴。Fiddle 是使用 ruby​​ 转换外部函数接口 (FFI) 的默认扩展。它在 Linux 和 Mac 上运行良好。但在 Windows 上，我收到以下错误。

代码hoge.rb

require 'fiddle/import'

module M
   extend extend Fiddle::Importer
   dlload File.expand_path('gr/bin/libGR.dll').gsub("/", "\\")
end

错误

Traceback (most recent call last):
        7: from hoge.rb:3:in `<main>'
        6: from hoge.rb:5:in `<module:M>'
        5: from C:/Ruby26-x64/lib/ruby/2.6.0/fiddle/import.rb:77:in `dlload'
        4: from C:/Ruby26-x64/lib/ruby/2.6.0/fiddle/import.rb:77:in `collect'
        3: from C:/Ruby26-x64/lib/ruby/2.6.0/fiddle/import.rb:87:in `block in dlload'
        2: from C:/Ruby26-x64/lib/ruby/2.6.0/fiddle.rb:47:in `dlopen'
        1: from C:/Ruby26-x64/lib/ruby/2.6.0/fiddle.rb:47:in `new'
C:/Ruby26-x64/lib/ruby/2.6.0/fiddle.rb:47:in `initialize': No such file or directory (Fiddle::DLError)
        5: from hoge.rb:3:in `<main>'
        4: from hoge.rb:5:in …

我想从 ruby​​gem.org 完全删除我的 gem。我浏览了仪表板，但没有删除按钮。我怎样才能删除它？

我想在Crystal lang而不是1d数组中只转换2d数组.所以我在下面写下switch语句.

a = [[1,2,3],[11,12,13]]
b = [1,2,3]

class Array
  def meow
    case self.first
    when Array
      puts self.transpose
    else
      puts "OK"
    end
  end
end

a.meow
b.meow

此代码不起作用.我该如何解决？这是错误消息.

  Error in foo.cr:16: instantiating 'Array(Int32)#meow()'

  b.meow
    ^~~~

  in foo.cr:8: instantiating 'Array(Int32)#transpose()'

        puts self.transpose
                  ^~~~~~~~~

  in /usr/share/crystal/src/array.cr:1642: undefined method 'first' for Int32

      return Array(Array(typeof(first.first))).new if empty?
                                    ^~~~~