Thread: how to de-reference a pointer to a map

Hi

If I have a pointer to a map container:

Code:

map<int, double>* mapPointer = &aMap;

how do I then de-reference the pointer to access a member through its key?

Code:

double a = map[4]; // works
double b = mapPointer*[4]; // incorrect - how do I do this?

thanks

Same way you would do any other object, put the * in front:

Code:

double c = (*mapPointer)[4];

>> double a = map[4]; // works
BTW, that should be "compiles", not "works", since it of course does not actually work.

many thanks