Vagrant 使用循环优化流浪文件代码

我有一个流浪者文件，它让我能够在VirtualBox中运行Win7和Win8操作系统

 Vagrant.configure("2") do |config|
  # Win7 VM
  config.vm.define "win7" do |win7|
    win7.vm.box_url = "file:///C:/V_W_S/windows_7_virtualbox.box"
    win7.vm.box = "windows_7_virtualbox"
    win7.vm.communicator = "winrm"  
    win7.vm.boot_timeout = 600
    win7.vm.graceful_halt_timeout = 600
    win7.vm.network "public_network", auto_config: true
  win7.vm.provider "virtualbox" do |vb|
       vb.customize ["modifyvm", :id, "--usb", "on"]
       vb.customize ["modifyvm", :id, "--usbehci", "on"]
       vb.customize ["modifyvm", :id, "--accelerate3d", "on"]       
       vb.customize ['usbfilter', 'add', '0', '--target', :id, '--name', 'SmartCard', '--vendorid', '0x096E', '--productid', '0x0007']
       vb.customize ["modifyvm", :id, "--memory", "4096"]
       vb.customize ["modifyvm", :id, "--vram", "256"]
       vb.cpus = 2
       vb.gui = true
       vb.name = "Win_7_x64_Mult"
end
end
  # Windows 8 VM
  config.vm.define "win8" do |win8|
    win8.vm.box_url = "file:///C:/V_W_S/Windows8_x64.box"
    win8.vm.box = "Windows8_x64"
    win8.vm.communicator = "winrm"  
    win8.vm.boot_timeout = 600
    win8.vm.graceful_halt_timeout = 600
    win8.vm.network "public_network", auto_config: true
  win8.vm.provider "virtualbox" do |vb|
    vb.customize ["modifyvm", :id, "--usb", "on"]
    vb.customize ["modifyvm", :id, "--usbehci", "on"]
    vb.customize ["modifyvm", :id, "--accelerate3d", "on"]       
    vb.customize ['usbfilter', 'add', '0', '--target', :id, '--name', 'SmartCard', '--vendorid', '0x096E', '--productid', '0x0007']
    vb.customize ["modifyvm", :id, "--memory", "4096"]
    vb.customize ["modifyvm", :id, "--vram", "256"]
    vb.cpus = 2
    vb.gui = true
    vb.name = "Win_8_x64_Mult"
end
end
end

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但我希望使用循环来最小化代码量。例如，在我的vagrant文件

config

中，值是相同的。区别是win.vm.define值、win.vm.box和win7.vm.box\u url值。我怎样才能压缩流浪汉的数量？

我会这样做

Vagrant.configure("2") do |config|

  config.vm.communicator = "winrm" 
  config.vm.boot_timeout = 600
  config.vm.graceful_halt_timeout = 600
  config.vm.network "public_network", auto_config: true

  # Win7 VM
  config.vm.define "win7" do |win7|
    win7.vm.box_url = "file:///C:/V_W_S/windows_7_virtualbox.box"
    win7.vm.box = "windows_7_virtualbox"
    configure_provider(win7, "Win_7_x64_Mult")
  end

  # Windows 8 VM
  config.vm.define "win8" do |win8|
    win8.vm.box_url = "file:///C:/V_W_S/Windows8_x64.box"
    win8.vm.box = "Windows8_x64"
    configure_provider(win8, "Win_8_x64_Mult")
  end

end

def configure_provider (node, node_name)
  node.vm.provider "virtualbox" do |vb|
    vb.customize ["modifyvm", :id, "--usb", "on"]
    vb.customize ["modifyvm", :id, "--usbehci", "on"]
    vb.customize ["modifyvm", :id, "--accelerate3d", "on"]       
    vb.customize ['usbfilter', 'add', '0', '--target', :id, '--name', 'SmartCard', '--vendorid', '0x096E', '--productid', '0x0007']
    vb.customize ["modifyvm", :id, "--memory", "4096"]
    vb.customize ["modifyvm", :id, "--vram", "256"]
    vb.cpus = 2
    vb.gui = true
    vb.name = node_name
  end
end

• 处于

  config.

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谢谢你的建议。你已经解释了非常有用的概念。