BloombergLP::bdlmt::Signaler_ArgumentType

For a function prototype t_PROT of up to 9 arguments, provide types ForwardingTypeN which is the most convenient way to forward the Nth argument. * as the type of argument N itself (in the case of some fundamental types) * as a const reference (if TypeN is large and either by value or by const reference), or * as a reference to a modifiable object, if that's how the argument was passed in the first place. Note that nothing is passed as an rvalue reference, since if there are multiple slots (usually the case), the argument will be moved from by the first one and then unsuitable to be used by the ones following.