consider the following class:
(let's say T is always instance of std::function)Code:template <class T> struct Stub { T& m_Function; template <class Args...> bool doesItThrow (Args... args){ try{ m_Function(args); } catch(std::exception& e){ return true; } return false; } }
I can't configure doesItThrows's template decleration to make it work..
I want the argument to be passed like the arguments are passed in std::thread
any help?
Declare doesItThrow as
and when you call m_Function, call it asCode:template <typename... Args> bool doesItThrow (Args... args)
Code:m_Function(args...);
What can this strange device be?
When I touch it, it gives forth a sound
It's got wires that vibrate and give music
What can this thing be that I found?
For reference, see this wikipedia article.
What can this strange device be?
When I touch it, it gives forth a sound
It's got wires that vibrate and give music
What can this thing be that I found?
It really should be
Look up perfect forwarding.Code:template <typename... Args> bool doesItThrow(Args&&... args) { try { m_Function(std::forward<Args>(args)...); } catch (std::exception&) { return true; } return false; }
But really, you should be looking at the noexcept specifier:
Code:void foo1() noexcept {} void foo2() {} void do_something(std::true_type) {} // If it was true void do_something(std::false_type) {} // if it was false int main() { do_something(std::integral_constant<bool, noexcept(foo1())>()); // Do static type dispatch std::cout << "foo1: " << noexcept(foo2()) << "\n"; // Do print out boolean value (can be used in if statements) return 0; }
Originally Posted by Adak
thank you both. work like a charm .
C++ is just awesome
