noexcept
noexcept operator (since C++11) - cppreference.com https://en.cppreference.com/w/cpp/language/noexcept
noexcept operator (since C++11)
The noexcept operator performs a compile-time check that returns true if an expression is declared to not throw any exceptions.
It can be used within a function template's noexcept specifier to declare that the function will throw exceptions for some types but not others.
Syntax
noexcept( expression ) |
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Returns a prvalue of type bool. The result is true if the set of potential exceptions of the expression is empty(until C++17)expression is non-throwing(since C++17), and false otherwise.
expression is an unevaluated operand.
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If expression is a prvalue, temporary materialization is formally applied. Particularly, the destructor is required to be non-deleted and accessible if such expression is of a class type or (possibly multidimensional) array thereof. |
(since C++17) |
Keywords
Notes
Evaluation of a non-throwing expression is allowed to throw an exception if the evaluation has undefined behavior.
