I have a map defined as
static map<unsigned int, deque<FOO_STRUCT*> > CV_MAP;
map_instance[key] vs. map_instance.find(key).
map_instance[key] will default construct a new value for the key
key if it is not present.
As in, it will call
deque<FOO_STRUCT*>'s constructor if
key is not present, and return the newly constructed
find member function will not construct a new value for the given key-- when the key is absent, it will just return an iterator that points to
Use what's appropriate for your use case.