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c_exceptions [2018/02/02 10:09]
rpjday [Error handling possibilities]
c_exceptions [2018/02/02 11:02]
rpjday [Error handling possibilities]
Line 17: Line 17:
   * Return a legal value and leave the program in an "error state" (''​errno''​).   * Return a legal value and leave the program in an "error state" (''​errno''​).
   * Call an error-handler routine.   * Call an error-handler routine.
 +
 +===== Guarantees =====
 +
 +C++ standard library provides one of the following guarantees for every library operation:
 +
 +  * //basic// for all operations: The basic invariants of all objects are maintained, and no resources, such as memory, are leaked. In particular, the basic invariants of every built-in and standard-library type guarantee that you can destroy an object or assign to it after every standard-library operation (§iso.17.6.3.1).
 +  * //strong// for key operations: in addition to providing the basic guarantee, either the operation succeeds, or it has no effect. This guarantee is provided for key operations, such as ''​push_back()'',​ single-element ''​insert()''​ on a list, and ''​uninitialized_copy()''​.
 +  * //nothrow// for some operations: in addition to providing the basic guarantee, some operations are guaranteed not to throw an exception. This guarantee is provided for a few simple operations, such as ''​swap()''​ of two containers and ''​pop_back()''​.
  
c_exceptions.txt · Last modified: 2018/02/02 11:02 by rpjday