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Standard Library
  1. Which is best for coding the standard library for c++?
    1. complex objects are returned by value
    2. have a member-swap()
    3. no trailing underscores on names
    4. All of above
    5. None of these
Correct Option: D

* complex objects are returned by value.
* have a member-swap().
* no trailing underscores on names.


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