Pass-by-value wrapper that avoids a C++03 conversion ambiguity.
Declared in <bsltf_argumenttype.h>
template<int N>
class ArgumentTypeByValue
: public ArgumentType<N>This class works around a limitation in C++03 whereby initializing a pass-by-value parameter of type bslmf::ArgumentType<N> from a MovableRef<bslmf::ArgumentType<N> > results in an ambiguous conversion sequence (i.e., MovableRef::operator T& vs. ArgumentType(MovableRef) are equally good conversions). Pass-by-value use cases (e.g., recording the value category of multiple function arguments) can use this class as a parameter type, instead, eliminating the ambiguity because MovableRef<AT> -> AT& -> ArgumentTypeByValue requires two user-defined conversions and is therefore eliminated during overload resolution.
| Name | Description |
|---|---|
ArgumentType<N> | Non-allocating integer wrapper that tracks copy and move operations. |
| Name | Description |
|---|---|
ArgumentTypeByValue [constructor] | Constructors |
operator= | Assignment operators |
copyMoveState | Return the copy/move state of this object. |
movedFrom | Return whether this object was the source of a move operation. |
movedInto | Return whether this object was the target of a move operation. |
reset | Set this object to the default-constructed state. |
set | Set this object's value and copy/move state. |
operator int | Return the value of this object. |
| Name | Description |
|---|---|
copyMoveState | Return the copy/move state of the specified obj. |
debugprint | Print the specified object as a string. |