Function which returns its argument. More...
Public Member Functions | |
template<typename Ref1 > | |
result< identity_op(Ref1)>::type | operator() (Ref1 x) |
template<typename Ref1 > | |
result< identity_op(Ref1)>::type | operator() (Ref1 x) const |
bool | operator== (identity_op const &) const |
Function which returns its argument.
The difference between this workfunction and identity is in the fact that the type of the argument is not known a priori.
identity_op
over paragraph edge values, the proxy is unwrapped to the value underneath.