Method Pointer weight accessor. More...
#include <weight_accessor.hpp>
Public Types | |
| typedef WeightType(ElementType::* | WeightAccessorMethodPointer) () const |
| Pointer to a const method of ElementType that returns double. | |
Public Member Functions | |
| mp_weight_accessor () | |
| Default constructor, accessor will return 1 all the time. | |
| mp_weight_accessor (WeightAccessorMethodPointer wptr) | |
| Constructor from a WeightAccessorMethodPointer. More... | |
| WeightType | operator() (ElementType const &e) const |
| Functor implementation. More... | |
Method Pointer weight accessor.
Weight accessor for element classes that provide access to their weight through a method signed WeightType (ElementType::*)() const.
This class is very similar to std::const_mem_fun_ref_t. The only two differences are
These differences allow mp_weight_accessor to be used as a default type for is_picked_systematic weight accessor, since a default-value initialization won't imply segfault. However, access is a bit slower because of the extra check for a non-NULL pointer. If the pointer is NULL, operator() returns 1.
See Accessors for more details.
Definition at line 61 of file weight_accessor.hpp.
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inline |
Constructor from a WeightAccessorMethodPointer.
| wptr | Pointer to the method of ElementType that returns the element weight. |
Definition at line 80 of file weight_accessor.hpp.
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inline |
Functor implementation.
e.*wptr_() else. Definition at line 88 of file weight_accessor.hpp.