Provide a namespace for the forwardToTarget function.

Synopsis

Declared in <bslmf_forwardingtype.h>

template<class t_TYPE>
class ForwardingTypeUtil;

Type Aliases

Name

Description

TargetType

The closest type used to "reconstitute" t_TYPE from ForwardingType<t_TYPE>::Type. This type may differ from t_TYPE through the addition of a reference.

Using Declarations

Name

Description

forwardToTarget

Return (for the specified v parameter) std::forward<t_TYPE>(v), where v is assumed to originally have been an argument of t_TYPE after forwarding through an intermediate call chain. Specifically, if t_TYPE is an rvalue type, return an rvalue reference to v, otherwise return v unchanged, thus converting an rvalue copy into an rvalue move when possible. For compilers that do not support rvalue references, return v unchanged. This function is intended to be called to forward an argument to the final target function of a forwarding call chain. Note that this function is not intended for use with t_TYPE parameters of volatile‐qualified rvalue type, which are effectively unheard of in real code and have strange and hard‐to‐understand rules.

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