'invoke_result_t': use of dependent type name must be prefixed

Question

I have a code:

//add any arg # function to queue
template <typename Func, typename... Args>
auto Add(Func&& f, Args&&... args)
{
    //get return type of the function
    using RetType = std::invoke_result_t<Func, Args...>;

and on last line, at compiling time I got:

error C7510: 'invoke_result_t': use of dependent type name must be prefixed with 'typename'

How can I overcome this error ?

Answer 1

Hi,

I suggest you could try to change the Conformance mode property value to No: Configuration Properties -> C/C++ -> Language -> Conformance mode = No.

For more details about /permissive- (Standards conformance),I suggest you could refer to the Doc:/permissive- (Standards conformance)

And you could add the typename keyword to the declaration to avoid the error.

Best Regards,

Jeanine

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