The Lakos Rule says that methods that only methods with wide contracts should be noexcept. That is, if your method has a precondition, it should not be noexcept.
This is apparently predicated on the fact that the preconditions will be implementable as C++ contracts some time in the future and that some compilers or compilation modes may turn contract verifications into runtime checks. Moreover, said checks can be implemented by throwing an exception indicating a contract violation. Alternatively, an application could replace the Qt assertion handler with one that throws (which is currently not possible because qt_assert is noexcept, therefore this replacement is not supported). I'd like to request Qt code not obey that rule. In my opinion, it's a defect in the contract implementation rather than on Qt code. The *pre* condition indicates something that must be true before the method is called and therefore the method's own noexcept specification does not apply *yet*. -- Thiago Macieira - thiago.macieira (AT) intel.com Principal Engineer - Intel DCAI Platform & System Engineering
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