Suppose K and V are two types either built-in or user-defined.
Suppose I use the standard default allocator< pair<const K, V> > .
Suppose I have
map<K,V> m;
// insert some elements into the map 'm'. Assume this is possible.
Then the type of map<K,V>::reference is 'pair<const K, V>&'
Is my above understanding correct ?
The reason for asking this question is the following:
In the book "STL Tutorial and Reference Guide", in the page 366, for
map, it is defined as follows:
template <typename Key,
typename T,
typename Compare = less<Key>,
class Allocator = allocator<pair<const Key, T> > >
class map.
In page 367, 'map::reference' type is defined as follows:
"reference is the type of locations of values stored in the map. This
is simply
pair<const Key&, T>&"
In my understanding, this should be "pair<const Key, T>&" and NOT
"pair<const Key&, T>&".
Am I correct ?
Yes. Most likely it's a typo in the book. Have you tried looking for