Re: how to implement MAP<std::string,TYPE>
Oscar wrote:
class CA
{
};
class CB
{
};
<"A", TYPE_OF_CA>,
<"B",TYPE_OF_CB>.
and then i wan to use the key string "A" to get the type TYPE_OF_CA
,that is CA.
how to implement it ?
If all these classes inherit from the same base class, you can use a
map from string to ptrs to representative objects of each class. This
can serve as a good replacement for your need of type introspection.
class CBase
{
......
// to return results of default constructor
virtual CBase * new_obj() = 0;
// add more prototypes for other constructors
......
virtual const char *name() = 0; // type name
};
class CA : public CBase
{
...
};
class CB : public CBase
{
......
};
std::map<std::string, CBase *> name_to_type;
After filling the map, you would be able to use these objects, call
their common methods, create objects of the same type, query the name
of their type etc.
Michael
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