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|  | 
| class Binding | 
 | 
Binding encapsulate the execution context at some
  particular place in the code and retain this context for future use.
  The variables, methods, value of self, and possibly an iterator
  block that can be accessed in this context are all retained.
  Binding objects can be created using Kernel#binding, and are
  made available to the callback of Kernel#set_trace_func.
  These binding objects can be passed as the second argument of the
  Kernel#eval method, establishing an environment for the
  evaluation.
| class Demo | ||
|   def initialize(n) | ||
|     @secret = n | ||
|   end | ||
|   def getBinding | ||
|     return binding() | ||
|   end | ||
| end | ||
|  | ||
| k1 = Demo.new(99) | ||
| b1 = k1.getBinding | ||
| k2 = Demo.new(-3) | ||
| b2 = k2.getBinding | ||
|  | ||
| eval("@secret", b1) | » | 99 | 
| eval("@secret", b2) | » | -3 | 
| eval("@secret") | » | nil | 
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