#1 楼 @cqpx #3 楼 @southwolf Velocity 是受到作者 Dash 许可的。 http://blog.kapeli.com/dash-for-ios-android-windows-or-linux http://blog.kapeli.com/meet-velocity-for-windows/

http://stackoverflow.com/a/9882795

What is the difference between 'private' and 'protected' methods in Ruby? In Ruby, the primary difference between a 'private' and 'protected' method is that a private method cannot be called with an explicit receiver, while a protected method can. What is an 'explicit receiver', you ask? An explicit receiver is the object that is receiving a message. In the following example, we have a receiver ('parent') and a method ('get_name'). The 'parent' object is receiving the instruction to perform the 'get_name' method.

[*?a..?z].sample(8).join