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What is this pointer? What is its Significance?

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           The this pointer is an object pointer which points to the currently calling object, The this pointer is, by default, available to each called member function.

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The this pointer is a way to access the current instance of particular object. It can be used for several purposes:

  • as instance identity representation (for example in comparison to other instances)
  • for data members vs. local variables disambiguation
  • to pass the current instance to external objects
  • to cast the current instance to different type

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