noexcept

Wu zhen hai (112)
noexcept can be used to any function, even any expression?
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void fun(){}
void gun() noexcept(fun)
{}
edge6768 (124)
Yes, but there are two seperate uses of the keyword;
a) to specify whether a funciton may throw an exception or not
-http://en.cppreference.com/w/cpp/language/noexcept_spec
b) as a compile-time operator to determine whether a function may throw
-http://en.cppreference.com/w/cpp/language/noexcept

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#include <iostream>

// noexcept as a specifier
void fun();
void gun() noexcept( /* Boolean expression */ true );
void run() noexcept;


int main() {
	//noexcept as a compile-time operator
	std::cout << noexcept(fun() ) << " " << noexcept(gun() ) << " " << noexcept(run() );

return 0;
}

Output: 

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