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C++ Coding Standard

Rule:  ERR#003

Synopsis:Before letting any exceptions propagate out of a member function, make certain that the class invariant holds and, if possible, leave the state of the object unchanged
Severity Level:1
Category:Error Handling


This avoids that the object throwing an exception is left in an inconsistent (undefined) state. For more details see [Abrahams].

Literature References:
ISC++ Rec. 12.10